Well, DFI does make good boards, and so does ASUS. I like Gigabyte, personally. I recommend you check out
MWave's "Motherboard Bundles" Wizard. This is a great research tool as it allows you to pick a CPU (like the one you own) and the wizard will list a bunch of motherboards and RAM options that will support that CPU. This is a great research tool you can use even if you buy elsewhere (although their prices are fairly competitive once you factor in shipping - if you live in the US). However, for only $9 more, MWave will mount the CPU and RAM on the motherboard
AND test them - if buying the whole bundle.