I am currently running the Tpower I45 and like it alot. I am having a Hard drive issue but I believe it is a bad hard drive rather than a buggy SATA controller. The color scheme of the board leaves something left to be desired if you are looking for a show off rig. Mine has a side view but with the 9800GTX+ and 8GB of RAM, you don't get to see much of the clownish colors. I put it together and it ran, which is more than I can say for BOTH of the ASUS boards that were supposed to be holding my rig together. Lastly, the add on CPU cooling rig has a little fan on it that went dead after 4 weeks of use, but that's a 10$ fix when I get off my lazy rear to fix it.
I am just starting to study up on how to OC, but I imagine my choke point will be RAM rather than anything else I have. It is only PC6400, though my board states it can take up to 1333 (same speed as the E8500 I have on it).