Rolf's (the Vector flavors) were produced under license with Trek. Trek wanted to go one way with em, Rolf wanted to go the other. They parted ways and Trek hooked up with Bono's.
http://www.freewheel.com/rolf/press-release.htm
Rolf's making the Primas now
http://www.rolfprima.com/index.html
I've got a set of Vector Sports (entry level) on my Lemond and have been very happy with em. They and thier siblings pop up on EBay every so often.