I'd suggest finding a LBS that can measure how wide your sit bones are.
That will give you an idea of the saddle shape you need.
I've been riding on a $10 cheapie that's worked well because of its
shape. But, now that my ride times are getting around the three hour mark, my
sit bones are starting to hurt. That's why I'm looking at the Brooks B17 imperial is for
added support. YMMV