I've just ordered my girlfriends new system! We bought UD3LR with Core 2 Quad Q9550 2.83ghz, 8GB pc 6400 Ram and Gtx 260 together with a 24" screen!
I think it should be great!
I really hope it will work direct out of the box!
One question: Do we need a Windows installation before we install OS X? (I have a Macbook Pro and SL formated 16GB stick).