Quote Originally Posted by jyyanks View Post
I ride in a fairly upright position and my sit bones are about 150mm.
Is that center-to-center or outside-to-outside?

If it's c-to-c, the B17 and Champion are not going to fit you. With a 150mm center, your outside is probably somewhere around 170-180mm, which puts your sit bones on the metal cantle plate under the leather. You'd be weightbearing on metal rather than on suspended leather.

If it's out-to-out, the B17 and Champion might be close. With a 150mm outside, your bones just miss the cantle plate by a whisker. You won't be on metal, but you'll be so close to it that the leather may not give as well as on a saddle with more distance between your bones and the cantle plate.

In either case, I'd suggest the B67 (springs) or B68 (no springs) regular length. (NOT the short!) You won't be anywhere near the metal on either of those saddles.