You will most likely get a lot of replies to your question.
Corbin is a big name in the customized seat business. People either love or hate their seats, as they are firm. They do have a heated option, and will come with the back rest for more $$$.
Russell and Diamond are the other big names that come to mind, that have good quality products.
I'm still using the stock on mine, but would most likely look into the Russell. My husband has had 2 Russell's made for bikes and really liked them. Russell does a good job in trying to fit the saddle to you, instead of the other way around. The Corbins will move you back somewhat, and I don't need that.
