I really want to hear what you think about it. I came pretty close several times to getting it. Only two things kept me from getting it: it's wired and the grip seems kinda narrow.
But if I were getting a new mouse today, the G9 would still be my choice. Only the Razers come close for gaming and they just aren't as refined as Logitechs.
What are you going to do with the Sidewinder? Use it at work?