I definitely like the shape of the rails. I had to go through some wild gyrations with the clamp mechanism on my seat post to get my Brooks Swallow in the ball park of where it needs to be. It still needs to be angled a bit more down so I can ride the drops comfortably. However, this is a fight for another day as there are not many seat post options for '88 Specialized Sirrus due to it's custom gauged tubing and at this point it would bet either get one of these saddles or a new seat post.