I have used most of these manufacturers in the past. MSI and ECS were okay, but I had trouble with both of them blowing up multiple motherboards in the past. I am currently running an an ABit KV7 (yes I know it is a bit dated at this point), but I have had no problems with it at all. Has worked flawlessly and reliably for me for a while now. I am scheduling a full system re-build for the next few months and plan to relegate this machine to back-up status.

Soon I will be looking for a new motherboard, but since my experience with ABit has been so good, I am likely going to look at them first. Other people often tell me the Gigabit boards are very good as well.