So far, 3.

My first was too big and I didn't know any better. My second was better, but not quite right. Size-wise, it was the right choice, but the geometry was just wrong for my body. My third, which is the one I have now, is as perfect as it's going to get unless I go custom. I actually love this bike, so I'm not in the market for a new one, but perhaps someday I'll be able to spare the cash to go full custom.