Less mainstream over here, but huge elsewhere. While a fairly young firm dating as they do from the nineties, Jim Felt invented the time trial machine as we know it today, so the brand has pedigree.
I love my Felt. Tried a Defy and really liked it, tried the Felt and it blew me away. It fits me just so, feels lively and efficient, and the finish and detailing are first class. This is one of those bikes you'll have to pry from my cold dead hands. Whether the model would suit another rider is open to many factors, but for me it hit the spot perfectly.