I have read that a lot of people like the Kilo TT that bikesdirect sells. Your best bet for info is to check bikefroums.net's fixed/SS forum. Personally I love my Bianchi Pista.
Look at it this way, road bikes for the most part are the same. Everybody uses the same geometry, same gruppo, everything. You can pretty much connect the dots with the parts between bikes. Unlike MTB's where everything is different, and plays a more significant role, it's not worth the price difference IMO. If anything, you can buy the bike from bikesdirect, then just go buy the frame of the bike you're really after, and still be ahead wallet wise and have the same, if not better built bike...