Razer mouse software that supports the full range of configuration options available on Windows plus automatic profile switching based on active app.

This has been a big sticking point for me. I'm using a Razer Naga (thats the one with the numpad on the side) and like to make use of those extra buttons - esspecially since I play a lot of more complex and/or more competitve games, but even for day-to-day use. Since it doesn't have on board memory, its useless on Linux, and that undoes about a decade of muscle memory (and requires me to buy a new mouse).