I've been through this myself. Everyones different, but here's a couple of good ones to try. 1: Brooks B-17. I haven't personally tried it, because I really like the perennial relief seats(cut-out up the center) seats, but many people swear by them. 2: Specialized body Geometry seats. I personally use a "Sport" model on my tourer, and it's perfect for me. 3: Koobi Au Enduro. I have that one on my everyday rider. I've put many centuries on that one and I can't say enough good things about it. Just a few good options in my humble opinion.