I have had a VXRS for almost two years now; it is not the ULTEAM, but my understanding is that the only difference is that the Ulteam has carbon dropouts. I will summarise that it is the best bike that I have ever owned. It does everything so well, and has the greatest neutral handling. great balance in a light bike. The BB threading is British.
Some more discussion is here:
http://forums.thepaceline.net/showth...highlight=vxrs