Bumping this to see if you got an answer.

Consider this a bump cause I'm curious too. The martha josey is certainly the best looking synthetic I've seen so far.

I seriously LOVED my Bautz brazilian but sold it as I didnt ride colts in it. It was the most comfortable seat, sat you deep and I personally felt secure in it. I have not ridden in a Joseys but id compare the seat feel of a BAUTZ brazilian to an Usher.