Quote Originally Posted by teawoman View Post
Ok thanks. I think maybe I associated them because both bike peeps who fit me when I was looking for bikes commented how difficult it was to get the right position for my seat and a proper reach (short legs and short arms, I guess).
If you are having a hard time finding the right combination of set-back vs reach, it's possible that your femurs are long and your torso/arm combination is short. If having set back gets your knees in proper alignment, but you can't reach your handlebars, it's your stem (or heaven forbid, your top tube) that may be the problem...not the seat post.

Of course, this has nothing to do with saddle comfort, in which case, seat post selection may make a difference. I use the Thomposon posts on both of my bikes (I do need zero set back because I have short femurs) and I love the two bolt setting adjustments for dialing in the perfect tilt!