I've built 2 SOYO KT400 Ultra systems (one for me, one for my sister), 15+ SOYO Dragon+ systems, and about 5 or 6 SOYO KT333 Dragon Lite systems (all for work)...every one of them runs like a champ! As a matter of fact, it's the only board that hasn't given me any problems so far. Best board I've ever used...been building systems for about 5 years now I guess.
Can't go wrong with SOYO IMHO.