The Sandio mouse is a great invention, definitely ideal for 3D applications and manipulation of 3D objects. The tutorial and provided manuals are excellent. For gamers the mouse is a little bit dodgy, at least from my perspective; but I have long fingers (nope, I'm not boasting).
As a normal mouse with the fantastic 2000 DPI resolution, it is above average. As a 3D mouse for 3D applications it is excellent, but as a gaming mouse it falls a little short from what I expected as well as cramping my hand. Functionality however is good, and while not suitable for me it may be your next best thing to a joystick/joypad. The extras like the wrist pad and adjustable DPI capabilities as well as a funky light theme all give the product more value, but the $80 USD price tag is a little hefty.
TweakTown awards the mouse a sturdy 84% which puts it in the top league, but not at the top. I expect great things from this company, keep an eye out folks.
As the company says: "Elevate your 3D experience" at SandioTech.