I like the b17 a lot. I've got two Selle Italia regals, a new one and an old one. The new one hurt me bad after about 30 miles, haven't tried the old one yet (got it at a garage sale w/ a bunch of other stuff).
I got a super cheapo saddle that came on a 70s C.Itoh. It is a cheap plastic shell with some crappy foam and black plastic cover--looks just like
this only black. This thing is nearly 40 years old and it's somehow nearly as comfortable as the b17.