Ultra D. MSI=crap IMO (had two S754 boards die in my very close friends rig after a short period of time). Can't comment on their nForce4 stuff, but I can say DFI makes the best boards for AMD currently available (CFX3200 ATI). The Ultra-D is a sweet board and will love the rest of your rig, except maybe that Ultra psu (theirs a big psu list at dfi-street.com that is very very helpful).