I'm not worried about the pricing, just want something that can use the latest memory and 2 sli video cards. I am looking to build a computer that will be good for a couple of years.
If you want to make this future proof, DO NOT build now. Wait until at least Sandy Bridge comes out. HOWEVER, if you DO need a new system ASAP, get a cheap AM3 board, Athlon II X2/X3 and a good set of DDR3. Once SB/BD comes out, you can swap out the board + CPU and use either BD or SB. If you live near a Microcenter, you can usually get a AM3 based MSI/BIOSTAR board free if you buy a Athlon II X4 or some other combo.