This is the saddle that I have on my tri bike. It's the best I've ever used.
http://www.sampsonsports.com/compone...stsSaddles.php

Here's the close up:
http://www.sampsonsports.com/bigimages/saddles1.jpg

It's not cheap, but peeing without pain after a long ride is priceless. I used the Terry Fly before this. After a while in the aero position it just abused my girly parts.