I'd ask you to get the Abit IP-35 Pro, which is a nice non SLI board, and is one of the best overclockers out there (I have one myself).
It supports Crossfire, ATI's answer to SLI, which isn't half as good in my opinion, especially since the second PCI-E socket is forced to run at 4x speed rather than 16x with two cards installed.
Its not on the list though, which is a shame, but Asus boards can offer just as much, for example, the Blitz Formula
The next upgrades are coming now you see, in the next few months, so it is vital you get a motherboard that supports the new hardware, for example 45nm CPU's, and 1333mhz bus support. Just a load of technological twoddle, haha, but you best be on board with those features
Another thing is, DDR3 memory is out now, but it is well too expensive really to think about buying the stuff, so it still is best to buy a motherboard that supports DDR2.
It'll b here for a long while yet still I'm guessing.
This one prooves interesting though, capable of both DDR2 and DDR3 support, and is fully upgradable to CPU's coming next when you decide to upgrade in the future:
Review for you: