Coming from a socket A (1.2 tbird) mobo, I chose the asrock 939dual sata2 as a way to create a long term upgrade path for my cpu(939 to AM2 to AM3 for only 30 more dollars!), graphics (agp to pci-e) and memory. I've been very pleased with how oc friendly it is and that I don't have to upgrade everything at once. Swap as many old parts over as you want and spend when you're ready to, not when you're forced to.
on the downside, i think ppl are having trouble with vist on it.