The best riding bike I have ever tried was a Concorde with Columbus tubing. A kind BF C&Ver by the name of GrayJay located the proper fork to replace the original that had stripped threads. Thanks again!
The frame was too big for me, but after getting the fork installed and the bike tuned up, I quickly appreciated the ride quality as being something special.
The best riding bike i own is a Trek 560EX with a 531 frame.