I've used them twice (to CDG in 04 and 05), both trips on UA, no problems upgrading when eligible or getting miles.
Similar experience with
www.gate1travel.com, which I actually prefer because the booking classes are more transparent.
Last edited by hbyerly; Jan 11, 2007 at 2:52 am
Reason: Because, in a senior moment, I confused the codes for Chicago and Paris.