Bigger burrs, faster grinding, numbered settings.

The JX-S is the step up from budget hand grinders that most people wish they'd bought first. The 48mm stainless steel burrs are larger than the Timemore C3's 38mm, which means faster grinding (about 20 seconds per 18g dose) and less effort per rotation. The external numbered adjustment ring makes it easy to find and return to your setting — critical for espresso where a single click can change the shot. Build quality is noticeably more premium than sub-£100 grinders, with a hefty, satisfying feel.
Sage Bambino Plus, Sage Duo Temp Pro
You want a hand grinder that doesn't feel like a compromise. The JX-S is fast enough for daily use and precise enough for espresso. The numbered adjustment ring means you can switch between espresso and filter without losing your settings.