Best Asus for i7 ?

I have few questions, which 1366 i7 920 motherboard is best within reason, like max $400, although I know expensive ones are for Xeon anyway so there are only up to $400 ones.
but something that can run along with some memory 1600 Mhz, possible higher in the future..
SLI max, although probably just 1 card Asus Radeon HD 5850.
What do you suggest ?

Thanks