I got my XIM3 earlier today in the mail and went to test it out but I'm running into a little bit of problems with the configuration and with my mouse working correctly.
For whatever reason even at the highest dpi setting on my mouse, I can't hit the max turn speed in Halo Reach even with 100 sensitivity and 1.00 acceleration, when I don't use a smart translator it is a little better but not by a whole lot.
I plugged in an old Razer Diamondback and have more luck getting that to work, so I hope I can work on getting my RAT working.
The other issue I'm having with the mouse is it seems as if any time the mouse is plugged in it is constantly pressing one of 3 buttons. Either Aux 4, 6 or 8. I'm assuming this is because the RAT has a profile switcher button, and 4/6/8 are what it "presses" while the profile is on. Because of this I'm completely unable to configure buttons when the mouse is plugged in.