I'd say nvidia 650i or intel p965-based mobos. 650i supports sli, whereas p965 doesn't, but may crossfire. 650i has 2 X IDE's, 4 X SATAs, eSATA, IEEE & 8 USB's. It overclocks almost as well as the more expensive 680i. p965 overclocks the cpu & ram at a ratio, & has fewer features than 650i in the same price range. p965 with IEEE, etc. will cost more.
Are you overclocking? What are the requirements? #'s of IDE, SATA, eSATA, IEEE, etc.