I would say that even though the sprint is a heavier bigger bike. that the weigh will be offset by the additional power of the Sprint. I've ridden a 2001 Speed Triple 955i extensively and think it handled better than the 01 TT600 t6that I rode. I wasn't a fan of the Low slung seat compared to my 04 Daytona 600. Id keep the sprint and this winter Id strip it down to make it look like a Speed triple that will drop some weigh and I would get the suspension looked at.. that will make the bike handle better and feel lighter. as you can tell im not a fan of the TTs hahaha .. sorry, but the sprint is a much better bike IMHO.