Those GT's were pretty stiff because of that cool looking truss bridge seatstay design. Might be a bit harsh for the long haul. Try one of these for your N+1: A '92 Trek 930. This bike is a little stiffer than my broken 830 due to the thicker tubes and especially the heavier fork tines. They have much less taper and are almost straight. A good century bike nonetheless.
http://i15.tinypic.com/2lktah0.jpg