I ride a Litespeed, and I love it. Having said that, forget about all the crap about the "huge" differences in ride quality when you compare top ranked frames. The most important factors will be fit, wheels and components you choose in this order. If you go with Fondriest, take the Carb Level (alu frame with carbon seat stays). If you decide that Litespeed fits you better, try to find a 2003 or 2004 Tuscany. You may spend an extra few hundred, but it's in a much higher category than the Firenze. All of these bikes are excellent. In 4-5 years, you will be looking for the newest technology, and I'm sure you'll be ready for a new bike again. Go ride as man bikes as you can before you actually commit.

Cheers