I have a 46 on order. I didn't get to try one in my size as they only had a 52 which was much too big. I spent an hour with the guys at the shop before deciding but I am still nervous about the fit. If it comes on time, I can pick it up next Wednesday. I alternate between being very excited (how many sleeps?) and studying the geometry charts! I am about 5'5" and I have a 29-1/2" inseam. The 50 has a 30-1/4" stand over size. I figured I was better off with the 46 since it has a 29-1/2" stand over. A bike that is too tall that way makes me nervous in case I'm off the bike quickly! I can always get a bit longer stem if I need to.