I've enjoyed my 1Zpresso K-Max, although in retrospect getting the blind shaker design in the magnetic catch cup of the K-Plus would have been nice. The external adjustment with detents was a selling point for me, despite it having a slightly coarser adjustment than comparably-priced manual grinders.
Coffee
The Magical Fruit
The Oromo people would customarily plant a coffee tree on the graves of powerful sorcerers. They believed that the first coffee bush sprang up from the tears that the god of heaven shed over the corpse of a dead sorcerer.
For what it's worth, I have a J-Max and hate the magnetic catch cup. It used to come off while grinding probably 10% of the time. I now leave a strip of electrical tape on it to keep it on while grinding.
This is what I use: https://www.amazon.com/gp/product/B092MDTGGR
It's the first one I have ever owned so I can't say how it compares to others but it works fine for me.
I have the original C2, not the Max version. And, it too, has been excellent. It might leave a little to be desired for espresso, but for everything else it's great.
I also have this same grinder and it's suited me well. However just like OP it's the only one I've ever used so I have no comparison.
I really enjoy the heptagonal 1zpresso Q2 for Aeropress and V60. I picked it because it fits inside the Aeropress plunger and seemed better than other grinders at similar price range in AliExpress. For these use cases grinding is smooth and not slow, and if I have to nitpick cons: removing the handle leaves it open, so I am planning to 3D print a cap, and the numbers on the clicking system do not align with the actual zero so you have to count clicks, or remember where the zero point is. If you pick the Q2S, the handle will also fold. If size is not a constraint, also consider Kingrinder K2/4/6, seem like good options.
James Hoffman on YouTube has done some comparison videos at a couple price points for manual grinders. Highly recommend checking those out.
I love 1zpresso's grinders. My JX-Pro is a real legend but there are different grinders for different types of coffee. For example, the 1zpresso ZP6 (which is back in limited stock) is largely considered the best hand grinder for modern speciality filter coffee.
Depends heavily on your budget. TImemore C3/2 and Kingrinders are great value options. 1zpresso has some nice options if you're looking to spend a bit more.