[pcblues]

I'm too old to remember the mappings for 20 button mice, but I've found the lowly Logitech G305 useful because it has a hardware button to toggle between DPI settings. That makes it useful without using any other key to change the speed of the mouse. Other than that, it has four buttons, and the scroll wheel clicks and goes left and right.

[diggan]

Another mouse I'm currently using for 3D stuff is Logitech G502, which also has a DPI toggle switch but more importantly, it has a "soft aim" button which temporarily lower the sensitivity while you hold that button. Great for precision stuff in 2D/3D arts, although I think the original use case is for snipering in video games or something like that.

Nothing beats using a Wacom tablet or similar though, even for boring 3D stuff. Not sure why, but I just end up with ridiculous precision compared to any mouse.

[pcblues]

I think it has to do with the precision of the hand wrapped around a pen/paintbrush with a lifetime of experience. The precision of effectively painting with an orange can not be matched to painting with a stick :)

(Edit follows:) Also having the side of the hand on the canvas creates the ability to by so much more accurate. You have minute movements of the fingers rather than painting with your forearm.