The guy was a fairly new rider, I think -- he'd been on a hybrid and this was his first roadie. I think he was naive, pleased as punch with his new bike, and wanting to share the joy. He was a very nice young guy.
I'm not sure the 57 is all that much too big, especially with the seat lowered a bit. But I just wasn't ready to try it yesterday.
I do think I need to test as many bikes as I can -- even just parking lot tests -- until I begin to get a feel for what I'm doing, and the differences. It's possible that it was "new position nervousness/tension" that was the main part of my problem on that Allez. It's also possible that it's something about my shoulders and upper body strength that I need to work on, at least partially. I really do get tense in my shoulders.
I can think of a number of things I can do, including just taking one of the shop's bikes out for a few miles to see if I loosen up any or adjust or if it gets worse, etc.
If you get a professional fit, is that to a particular bike? Or are those measurements that you then take with you to determine what kinds of bikes to try? Does a professional fit tell you what geometry to look for, etc.?
I am now really wondering about the 52. I thought it sounded small. The guy looked at me and said, "We're about the same, I think, let's try a 52, this is what I ride." Then after adjusting the seat a couple of times, he said it looked like a good fit, and that I wasn't stretched too far or bunched up, and that if that was a bike I was interested in that they'd then start working on the stem, handlebar, etc.