Since you're looking for a new board without even telling us what are the uses for it, I guess you have not bought anything that goes along with it yet.
Look at the new Asrock Fatal!ty AMD 990-FX board. It got quad-crossfireX, Triple-CrossfireX, CrossfireX, quad-SLI and SLI compatibility. Also got 100% nippon capacitors like better brand mobos. It also got an UEFI.
Nvidia's SLI doesn't come close to AMD's crossfire scalability and muti-monitor support. It would cost you less money buying an AMD board/CPU/graphic card combo than any other brands, unless you plan to overclock (that which I doubt since you are asking a noob question).