Adding to what Maddox said about Brooks. Whether you like them or not could also depend on the model you get. I had a B17 to start with and hated it. This is the one that most people love. I replaced that with a Swift and liked it a lot. I commuted for a year and a half on my Aurora with it. When I got my Sputnik, I bought a Swallow to put on it and actually like it more than the Swift. I'm still breaking it in, but it's great. Many fixed gear riders seem to like the Professional.

On my roadie, I have a Fizik Arione. I also like it a lot. Dunno how it'd look on a Steamroller, but it's a great saddle IMO.