| Grinder | Repeatability CV | Data Points | Link |
|---|---|---|---|
| Gevi VelPro 400 | 4.0% | 55 | — |
| Kingrinder K7 | 5.8% | 40 | — |
| Fellow Opus 2 | 5.9% | 110 | — |
| Timemore C5 ESP Pro | 6.1% | 70 | Check Price |
| 1Zpresso J-Ultra | 6.3% | 45 | Check Price |
| Kingrinder K6 | 6.8% | 55 | — |
| Fellow Opus | 7.2% | 55 | — |
| Baratza Encore ESP | 7.3% | 100 | — |
| Timemore C3 ESP Pro | 8.6% | 75 | Buy it |
| AeroPress Manual Grinder | 10.9% | 90 | — |
Manual Grinder Comparison
- 1Zpresso J-Ultra
- Timemore C5 ESP Pro
- Kingrinder K7
- Timemore M01 (Millab)
- Kingrinder K6
- AeroPress Manual Grinder
- Timemore C3 ESP Pro
Overall Between-Run SD
Averaged across repeat-run settings in the active range. Lower is more consistent.
Overall averages are dynamically clipped to a shared grind range (D50 ≤ 1150µm) so every grinder is judged on the same particle sizes — a fair, apples-to-apples comparison. For the complete, unclipped performance data, read the full reviews: 1Zpresso J-Ultra, Timemore C5 ESP Pro, Kingrinder K7, Timemore M01 (Millab), Kingrinder K6, AeroPress Manual Grinder, Timemore C3 ESP Pro.
Electric Grinder Comparison
- Baratza Encore ESP
- Fellow Opus
- Fellow Opus 2
- Gevi VelPro 400
- Geimori GU63
Overall Between-Run SD
Averaged across repeat-run settings in the active range. Lower is more consistent.
Overall averages are dynamically clipped to a shared grind range (D50 ≤ 835µm) so every grinder is judged on the same particle sizes — a fair, apples-to-apples comparison. For the complete, unclipped performance data, read the full reviews: Baratza Encore ESP, Fellow Opus, Fellow Opus 2, Gevi VelPro 400, Geimori GU63.