Thank you guys very much. It's down to the wire- I have to decide today

I went to talk to Ian, my lbs guy who so ably fitted my Serotta. He looked up the specs for the Bianchi frames, plugged the numbers into a spreadsheet he'd set up with my target measurements, and said that even with tweaks (and me bringing my own stem, etc.), none of their frames would be comfortable for me, given my knee stuff, my neck stuff, my carpal tunnel, and my looong legs. He also pointed out that I have cheater brakes on my Serotta, and the reach on the Bianchi will be even longer- I'd be pretty stretched out. I'd have to be comfortable riding on the hoods to reach the brakes. I also LOVE the stable feeling of my Serotta. He said the Bianchi will feel less stable because of the geometry. He also reminded me that I came back in serious pain (neck, shoulders and hand) from about 5 short test rides of bikes he set up to be close to my geometry when he was fitting me.

It ain't worth the risk for me, I think. So I'm going with the hybrid. Bummer. But thanks for participating in my last minute hysteria