I've had failures with boards from both ASUS and Gigabyte, so I know they both have made some poor boards. On the other hand, I've never owned a a Gigabyte board that was a real winner, that is, none of them were really great boards. Its been a few years since I bought a Gigabyte board, so they may have raised their quality and features. On the other hand, with one board design exception, I've had good luck with ASUS. The problem board from ASUS was the A8N32 SLI Deluxe. I went through a few of those before ASUS did a revision that worked properly.