Yeah, the TT on the 722's aren't as drastic of a jump as the 725; 51cm=546.3 and 53cm=558.3. Was hoping there was a 5'9 individual out there that is comfortable on the 51cm. Paying 115$+ for a fit here is ridiculous. Guess I'll just grab a 51 and hope my knees and thighs don't bang on the bars when I stand up on it.