哪一款咖啡研磨机能提供制作意式浓缩（espresso）时最细腻的研磨颗粒？

The Baratza Encore ESP Pro is a stepless, espresso-focused all-purpose grinder with a digital display that shows grind position from 0 to 60, with 40 settings identified in the espresso range. It includes timed and single-dose modes, plus an integrated flow-control disc and anti-static technology to improve consistency and reduce mess. It suits home baristas who want one grinder that can dial in espresso while still covering filter brews.

The Rocket Espresso Faustino 3.1 is a compact espresso grinder built around 50 mm flat burrs for consistent, espresso-focused grinding. It uses stepless micrometric grind adjustment and offers programmable dosing (up to three doses) plus continuous grinding, with quieter operation features. It suits home baristas who want fine control and repeatable dosing in a small footprint.

The Baratza Sette 30 is a fast, low-retention espresso-focused grinder with 31 macro grind steps for fine tuning shot extraction. It uses a 40mm steel burr set and a vertical, straight-through grind path to minimize retained grounds. It's well suited for home espresso (and other fine-grind methods) especially if you want repeatable, adjustable results at an entry-level price.

The Baratza Sette™ 270 is a compact espresso grinder with 40mm conical burrs and time-based dosing. It uses 30 macro adjustments plus a stepless micro adjustment ring with 9 indicators for dialing in fine espresso grinds. The no-chute design helps route coffee directly into your portafilter or grounds bin with low retention.

The Eureka Mignon Libra is an espresso grinder with 55 mm flat burrs and stepless micrometric grind adjustment. It uses grind-by-weight dosing with a touchscreen display and is built around a 310 watt direct-drive motor (1350 RPM). It suits home espresso setups that want repeatable weight dosing and fine adjustment for espresso dial-in.