First of all, I would like to say hello to everyone, since I have just joined the forums. Although this is my first post, I have been an avid reader for several months now.
I am not quite sure how good the Soltek or Shuttle motherboards are (I can only assume that they aren't outstanding, since the web sites I have read haven't said much about them), but I would recommend the Gigabyte 7VRXP. I recommend it for several reasons. First, it has been one of the top rated boards in every review of it I have ever read. Second, after all the research I did, it is the board I have decided to get (It just arrived today!!!). Third, two of my friends happen to be building new computers also, and it is the board that THEY decided to get too, after their own independant research.
I know that you were thinking about the 7VRX, but the XP is only $15 - $20 more, and the onboard RAID, better onboard sound (Creative CT5880 chip), onboard LAN and a couple of other things are well worth it.
-mrchaotica