I have to agree with Computergen, the DFI Lanparty boards are nice-if you plan on overclocking. I have heard pretty good reviews about the MSI boards and the Abit boards. I was faced with this same decision a month back and decided to go with a Gigabyte, and I have no complaints. Very solid board, plus it has a dual BIOS, you never know when that might come in handy.
Athlon 64 3700+ San Diego s939 | eVGA nVidia 7800 GTX
Gigabyte GA-K8N Ultra-SLI 939| Seagate Baracuuda 250 GB SATA
WD 80 GB | ASUS Vento 3600 Case (Red)