As I have ridden 1000s of miles in the 4 years I have had my FELT F90 and enjoyed all of them and upgraded several things, Neuvation M28 AERO3 wheels, replaced SORA shifters and fd with Tiagra adding 9 speed cassette, replaced the FSA/RPM crank with Tiagra ( all the tiagra was lightly used, good deal ) replaced Tektro brakes with Cane Creek SCR5s.
I have never ridden another modern road bike I was wondering where on the quality scale my frame was, is it considered harsh or a comfortable aluminum frame, it doesn't matter as I am very happy with it and will put many more miles on before moving on to another bike.
Just wondering.