I just got the msi kt3 ultra aru saturday and its awesome!
The bios still has a few kinks in them but I have yet to get a crash or bsod. its running my samsung pc2700 at 146+33mhz cas 2. the onboard sound isnt as good ans my santa cruze(like anything is) but it has good features overall.
If your going to set up a raid o setup you might want to look around for anotherboard because it isnt great, don't get me wrong its better than a single drive but not as fast as some ata100 raid o setups I've seen. usb 2.0 is a good feature but I have no use for it yet(although it is backward compatible with 1.1). The red pcb and slver chipset fan is cool to. It makes me happy. So Its all up to what you want in a board.
If you ever stop learning, YOU'ER DEAD!!