I'm voting for the first one. The second one is good too, but the MB costs more than the CPU and that just feels wrong.
Edit: of course, for multi-GPU on that board you need to get a Crossfire card, like HD 4850. It's pretty much like the 9800GTX, just a bit faster. A HD 4870 would be even better but it costs more and you'd need a PSu with 4 PCI-E connectors instead of 2 for Crossfire.