OK, this mobo is a little more expensive than the other stuff, but if you can find the 478 version, it is 100% worth the cash.
DFI 875P Chipset Motherboard for Intel Socket 478 CPU, Model "LANPARTY PRO875B"
This is the refurbished, OEM, barebone model, which you DON'T want, but Newegg doesn't have the 478 version any longer, just that board with a 775 socket.
I know that you be used to Intel, but AMD is really the best choice, you should really think about it, because you will not regret it.
The chipset version is what the mobo is based off of, the socket type, the RAM, video card, etc. etc. interfaces depend on the chipset.
How do you like the sig?