I had a Shuttle and would steer you clear of it. Had some voltage issues and the AGP port burnt out. You might want to wait until middle of November to buy... fair number of boards will be hitting the market and you will have more choices. Asus, Abit... and also some integrated nForce boards will be hitting the market.
If you don't know much about nForce based motherboards,
here's a link for one company that will have a board on the market soon. Upside of these boards is that they have very good quality sound, ethernet onboard as well as a modem, and integrated graphics as well. The graphics is OK if you aren't a hardcore gamer. If you are hardcore, you can plug in your own video card.
You might also want to look @ the Epox board if you want to keep costs down.
Agree with Boo... you want a KT266A board. Much better performer and not a big difference in cost.