I've been using this one since April. It was a new-unsold 2005 model that the LBS owner was holding on to for whatever reason. He'd upgraded some things, it's got Ultegra deraillers & brifters, a pair of Ultegra/Mavic Open Pro wheels, CF seatpost, CF bars, and a way-more-comfortable-than-it-looks Ritchey racing saddle. I paid $1,200 for it... More than the average used price, but in line considering the upgrades.
Naturally, I negated the advantage of all those lightweight bits when I added a Delta rack and trunk, a pair of LED headlamps, and three taillights. Not to mention the Fred Factor Performance platform pedals w/clips & straps.
Just 'cause I commute doesn't mean I don't like to go fast....