I have tried many grinders. The two most expensive hand grinder I have are the Timemore NANO, and the Knock Aergrind.
Hands down, without even a small flinch, my favorite of the two is the Timemore.
The grinding action is smooth. The grounds are uniform. The dosing is perfect.
The only thing that's not perfect is that I'd have trouble dialing in the dame grind setting on a new grinder, or resetting the grind setting.
But the Knock is much harder to use and the parts are fiddly.
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!