This question is all a matter of optinions. Either you will want an Abit KT7 or Asus A7V. Those are the 2 best around. My personal advice is to go for the Abit KT7. Its better for overclocking than the asus, and overall, I much prefer abit over asus. Not to mention the fact that the asus only has 5 pci slots comparied to abits 6, and the asus doesnt have any ISO slots (if you have any older cards that you will be using.)
Scaromanga