I have an MSI Neo4 platinum right now. it works great with ocz 2gb platinum. I to have a 6800gt. the combo is perfect for me.
I was goin to SLI my videocard, but with prices of 7800gt at newegg i might just upgrade than buy another 6800gt. =P
Back to mobos, epox, DFI, and Jetway are my suggestions and msi too =) I've never owned or tested a jetway board but it seems to get nice reviews from ppl.