I went from a 7200FX to a Pilot 2.1. For me, the transition was easy. I loved the lightness and maneuverability and the speed and the position. I wanted somewhere else to put my hands when I was on the hybrid. I do know what you mean about the handlebars feeling narrow on the roadbike, though. At first, they looked so little. Now when I get on my hybrid, those handlebars look sooooo wide.

I felt crunched on the 51's that I tried and ended up on a 54 WSD and it feels great. Try WSD and not. Try everything you can get your hands on. It sounds like you've already eliminated Campy, so that's a step.

Also - you will likely not like the saddle on whatever roadbike you ride, so don't let that influence you. The stock saddles are usually lousy. You'll find lots of discussions about that here.