Thanks for replies. I'm sort of leaning towards RDRAM, and seems that there's no 850 mobo with built in USB 2.0 (I could be mistaken here).
Chaotix,
You mean it uses up a slot but not plugged into the PCI slot itself right?! A bit like daughther boards I assume? Also the MSI you're using, is it the ARU model? How's that working out for you, stability/compatibility?