I've been "saving" my Ti bike for faster group rides and using my steel framed bike for Century rides. The century bike has a road triple, room for fenders, attachment points for racks and can carry 4 bottles. This bike is very comfortable
The ti bike has a standard double, no room for fenders, or attachment points. It clearly sprints and climbs faster, but is not significantly faster over longer distances.
Having said all that, I sometimes wonder why I don't put a triple on it and use it for supported century rides?
Do I have the right priorities?