bike fit is an ongoing process for me right now. when I get it right I'll know it. also I find that each bike can be fit to a single rider and yet when the rider switches bikes he has to get used to the fit of the bike. These pics show the bikes that I've fitted for "me". I imagine they have similarities and maybe the pictures won't show the difference but there are very different bikes. Oops don't know how that last one got in there.