I am building a new system now and am thinking about which  I should get. My total budget us around $500-530
Although part of that budget is toward Win7 Home Full(Unless I should get the OEM), and the other is a new hard drive
Asus:
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=50391...

ECS (comes with a VGA too
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=58384...

or this with the 965 combo:http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.374195
Gigabyte 
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.408979

EDIT- and I know for a fact that everything I have for the GIgabyte one is 100% going to work. And so far I think that is the best deal(from their support list that is)