I use the standard B17 on all my bikes, once they are broken in they are as comfortable as a nice pair of leather shoes/boots that conform to your feet (butt).

I find my best deals on e-bay, I recently purchased a new Brooks B-17 for $80.00 with free shipping.
I don't remember the name but they do show up once in a while. (I didn't receive the box but the saddle did come on the mounted fiberboard with the wrench, inside a shipping envelope that made me think something could be fishy but the saddle was new and not flawed).