Asus makes several really good motherboards. I can recommend one if you can answer this. What features are you looking for? Do you want to X-fire or SLI? How many sata 2 and sata 3 ports do you need? Do you need sata 3 ports to come to the front of the computer? Will you be overclocking the CPU? How much memory do you need the MB to support? Do you want to use the CPU's integrated graphics, or will you be using a dedicated graphics card?
Answer all of that, and the choices start to narrow down.