Based on numerous threads here I decided to go with the MSI Pro2A. Couple of determining factors were the ATA-100 support, and the reported quality of their technical support. Finally there are a LOT of people on this site that already have one. If you run into problems I think people will be jumping through hoops to help you out.
All the reviews I read list it as one of the most stable boards on the market (with the Abit), especially when overclocking. For the price, I think you'd be doing well with the MSI.
At least, that's what I am counting on...