HOME Grind-by-Weight Grinders Compared: Mazzer Mini G vs. Fiorenzato AllGround Sense vs. Mahlkönig E64 WS vs. Eureka Libra 55 vs. Eureka Libra 65 AP vs. Eureka Mignon Stark W
HOME Grind-by-Weight Grinders Compared: Mazzer Mini G vs. Fiorenzato AllGround Sense vs. Mahlkönig E64 WS vs. Eureka Libra 55 vs. Eureka Libra 65 AP vs. Eureka Mignon Stark W
Grind-by-Weight (GBW) has changed the way espresso gets dosed. Instead of grinding by time and weighing afterward, the grinder measures the actual weight and stops automatically at your target dose. Less waste, more consistency, a faster workflow.
But which GBW grinder suits you? We compare six current models – all with a built-in scale, all with Flat Burrs, all Made in Italy (the Mahlkönig being the only exception: designed in Hamburg, manufactured in China) – based on verified manufacturer data.
The comparison table – all specs at a glance
| Mazzer Mini G | Fiorenzato AllGround Sense | Mahlkönig E64 WS | Eureka Libra 55 | Eureka Libra 65 AP | Eureka Mignon Stark W | |
|---|---|---|---|---|---|---|
| Burrs | 64 mm flat, bearing steel (233M) | 64 mm flat, Dark-T (M340) | 64 mm flat, specialty steel | 55 mm flat, hardened steel | 65 mm flat, blind burrs | 65 mm flat, Pure Diamond (upper blind disc) |
| Optional / compatible burrs | k202P + SSP 64 mm (HU, MP, Lab Sweet V3) | – | SSP 64 mm (HU, MP, Lab Sweet V3) – recalibrate zero point | – | – | – |
| Burr coating | No (SSP: Red Speed TiAlCN) | Yes (Ti/Al/C/N), 5× lifespan | No | No | No | No |
| Motor | 350 W, 1400 U/min | 250 W, 1400 U/min | 200 W, 1950 U/min | 310 W, 1350 U/min | 320 W, 1350 U/min | 320 W, 1650 U/min |
| Grind speed | 2–2,5 g/s | k.A. | 2–3.5 g/s (espresso ≥3 g/s) | 1,4–1,8 g/s | 1,8–2,5 g/s | 2,5–3,0 g/s |
| GBW accuracy | ±0,1 g | ±0,1 g | ±0,1 g | ±0,1 g | ±0,1 g | ±0,2 g |
| Adjustment | Stepless, micrometric | Stepless, ring nut | Electric, DDD (micron) | Stepless, micrometric | Stepless, King Size dial + rev counter | Stepless, micrometric (King Size Grind Dial) |
| Display | TFT, 19 languages | IPS touchscreen, color-changing | Display + Sync App (Wi-Fi) | Touchscreen | Touchscreen | 2.8-inch touchscreen |
| Programmable doses | 3 (weight or time) | Several (espresso, moka, filter) | 3 recipes | 2 (weight) | 2 (weight) | 2 (weight) + continuous |
| Hopper | 280 g | 250 g | 250 g + single dose via bellows | 300 g | 300 g | 300 g |
| Suited for | Espresso (+ milk) | Espresso, moka, filter | Espresso (primary) | Espresso (only) | Espresso + filter | Espresso |
| Noise level | k.A. | Quiet (vibration-damping) | <65 dB | Quiet (Silent Tech) | ~64 dB (Silent Tech) | Silent Technology (~20 dB quieter than predecessor) |
| Connectivity | No | No | Wi-Fi, Sync App | No | No | No |
| Weight | 10 kg | 9 kg | 5.8 kg (net) | 6,5 kg | k.A. | 8 kg |
| Made in | Scorzè (Venice), IT | Italy (Fiorenzato) | Designed in Hamburg, manufactured in China | Florence, IT | Florence, IT | Florence (Sesto Fiorentino), IT |
What makes each grinder special
Mazzer Mini G – maximum burr flexibility with GBW
The Mini G comes from the professional world: 10 kg die-cast aluminum, 350 W asynchronous motor, Vibration Filtering Algorithm. Primarily a hopper grinder for espresso (max. 1 kg/day) with ~8 g retention in hopper mode.
Its standout feature: the largest burr selection in the entire comparison. Besides the two official Mazzer sets (233M for body/milk, k202P for sweetness/clarity), the Mini G also accepts SSP 64 mm burrs. In the CCC range, we carry three SSP sets with Red Speed coating (TiAlCN, approx. 5000 kg lifespan):
SSP 64 mm High Uniformity (HU) – espresso specialist for medium/dark roasts. Maximum body, creamy crema.
SSP 64 mm Multipurpose (MP) – unimodal, for espresso + filter. Minimized fines, high clarity.
SSP 64 mm Lab Sweet V3 – sweetness focus for light roasts and modern espresso recipes.
In total, you get five flavor profiles to choose from (2× Mazzer + 3× SSP) – no other GBW grinder in this comparison offers this flexibility.
Fiorenzato AllGround Sense – the long-lasting all-rounder
The most versatile grinder in the field: espresso, moka, and filter in a single unit, with a color-changing IPS touchscreen. The 64 mm Dark-T burrs (M340 steel with Ti/Al/C/N) hold up, according to Fiorenzato, to 3000 kg – five times longer than standard burrs.
Especially practical: tool-free access to the burrs and Zero-Calibration, which retains the grind size after cleaning. However: no optional burr sets available – you're committed to the Dark-T geometry.
Mahlkönig E64 WS – the connected grinder of the future
Mahlkönig's first home grinder with Grind-by-Sync: via Wi-Fi it connects to compatible espresso machines and automatically adjusts the grind size to the extraction time. Adjustment happens electrically via DDD (Disc Distance Detection) at the micron level.
With at least 3 g/s espresso output, it's the fastest in the comparison. At under 65 dB, it's one of the quietest. No burr-swap option – but the most advanced digital ecosystem.
Eureka Libra 55 – the compact espresso specialist
Eureka's first GBW grinder: 6.5 kg, 124 mm wide, 55 mm burrs. Clearly designed for espresso – not built for filter. ACE anti-static and Silent Technology make it whisper-quiet.
The Libra 55 is the right choice for pure espresso drinkers with limited space and a wish for a proven, straightforward GBW system.
Eureka Libra 65 AP – the all-rounder from Florence
The evolution of the Libra 55: larger 65 mm blind burrs with all-purpose geometry, King Size adjustment dial with rev counter (scale 0–20), 320 W motor for 1.8–2.5 g/s.
The all-purpose burr geometry makes the Libra 65 suitable for pour-over, French press, and cold brew for the first time as well. The rev counter remembers your position when switching methods.
Eureka Mignon Stark W – the standalone scale in the compact Mignon format
The Stark W brings Eureka's Instant Grind Weighing directly into the proven Mignon housing: a scale that weighs in real time while grinding and stops automatically at the programmed dose – with no external scale under the spout needed. The 65 mm Pure Diamond burrs with an upper blind disc keep retention low, and Silent Technology noticeably reduces noise compared to the predecessor model.
Unlike the connected systems in this comparison, the Stark W remains deliberately standalone: no Wi-Fi, no app, but a 2.8-inch touchscreen directly on the unit and the smallest footprint in the entire field. At ± 0.2 grams, its accuracy sits just behind the ± 0.1 grams of the other five grinders – for most espresso recipes, a difference you'll barely notice in the cup.
Which grinder suits you?
If you ask us for a single everyday recommendation, at CCC we most often reach for the Mahlkönig E64 WS. Not because it stands above the other five – our opinion is one of many – but because it delivers the most straightforward combination for most home setups: Grind-by-Weight accurate to 0.1 grams, an electric micron adjustment with no dial-guessing, and burrs from the same lineup as Mahlkönig's commercial grinder, the SD64. If you have a more specific need – burr swapping, several methods in parallel, the smallest footprint – you'll find the better-suited alternative below.
You only drink espresso and want maximum dosing accuracy?
→ Mazzer Mini G (professional feel, burr flexibility with an SSP upgrade path) or Eureka Libra 55 (compact, quiet, proven).
You switch between espresso and filter?
→ Fiorenzato AllGround Sense (widest grind range, longest-lasting burrs) or Eureka Libra 65 AP (more compact, quieter).
You want a connected system that optimizes itself?
→ Mahlkönig E64 WS. The only grinder with Grind-by-Sync and electric micron adjustment.
You want to steer your flavor profile through burr swapping – espresso body today, filter clarity tomorrow?
→ Mazzer Mini G. The only GBW grinder with five flavor profiles: 2× Mazzer (233M, k202P) + 3× SSP (HU, MP, Lab Sweet V3).
You want Grind-by-Weight without an app, Wi-Fi, or accessories – simply standalone on the counter?
→ Eureka Mignon Stark W. Scale, burrs, and touchscreen in one housing, no connection to a smartphone or network needed.
☕ CCC tip – why GBW beats grind-by-time
Grind-by-time doses by the second. But the same grind duration delivers different weights as soon as the grind size, bean density, or humidity changes.
With an 18 g dose, a 0.5 g deviation is enough to shift the brew ratio by almost 3% – enough to tip a shot from balanced to sour or bitter.
All six grinders eliminate this variable: they measure the actual weight and stop automatically at the target weight. Your espresso doesn't just taste good today – it tastes exactly the same again tomorrow.
Compare all six grinders live – at the Coffee Coaching Club
In our showrooms in Zürich (Hagenholzstrasse 50b) and Bern (Gerberngasse 44), the grinders are set up ready to use. Same bean, same dose, different grinder – you taste the difference.
Eureka grinders in the CCC online shop
Mahlkönig E64 WS in the CCC online shop
La Marzocco portafilter machines
Arkel Coast – dual boiler with Flow Control
CCC roastery – specialty coffee from our own roasting
Questions about choosing the right grinder? Write to us or give us a call: office@coffeecoachingclub.ch | 076 789 15 79.
