Oh Yeah. The Tuscany is a GREAT bike. I really love it. Very nice on long rides & pretty quick handling, but.......
The SL1 is unbelievably quick handling. A great sprinter. Most of my rides now are 35-45 miles. The SL1 is great in the pack for jumps & breaks. It's not as comfortable on big bumps, but on rough road it's close to the Ti bike.
The SL1 handles a lot like my Cannodale 3.0 Crit bike. (1993 immaculate & upgraded to Ultegra 9spd STI) A fast fun bike, but not too nice on rough roads.
i will probably keep the Litespeed to, but I have way too many bikes around here right now. (road, mountain, recumbent...)