I bought a Motobecane (USA) bike that came with some kind of Ritchey "Comp" seat. It's pretty comfortable, but it's doesn't have a "comfort grove", and I'd like to try a saddle with a groove.

Since the seat fits me extremely well other wise, I's like to get the same "size". Is there some measurement I can take on my existing seat to help ensure that I get another seat that fits as well?

Thanks,

Mike