Asus, Gigabyte, Abit, Biostar - all good boards. From personal experience, I wouldn't touch MSI or Foxconn.
Now there are only really two leaders, those being Gigabyte and Asus. Abit died because it couldn't deal with RMA issues and they had a series of faults which damaged their reputation.
EVA is coming out of nowhere fast, but with mobo's time will tell.
The design of the boards are such that if there are problems, they should have been so designed that a BIOS update should fix the problem, should is the word!
Look at the amount of extras you get with a Gigabyte board.. nothing compares with them. Also out of the 50 or so boards that we have RMA'd (and that is a tiny percentage of the systems we have built!), not once did our supplier argue or refuse to exchange. We had heaps of trouble with Asus, and Biostar was actually more reliable than them when it came to RMA's. Biostar makes superb mid-range boards for the workstation/office machines, of which we have well over the thousand still out there in the field. Their expertise is not in high-end boards, although they are starting to produce some; their market placement is high quality reliable mid-range boards, and I rate these very highly.
Gigabyte had recent issues with whining caps, and this appears to be pure luck of the draw. On my own UD3, I just clocked it some more and it went away
