Never heard of a 3d Mouse... Just looked it up and found https://www.3dconnexion.com/products/spacepilot-pro.html It doesnt really look like it would improve my 3D work, all those buttons seem a bit superfluous.... I dont even really get how you'd use it... Its like $400
I WANT one...
..not going to get one, but still I'm a sucker for gadgets.
Learn from others mistakes, it takes too long to make them all yourself.