I have Brooks saddles on some of my road bikes, Two of my bikes have the C15 Carved. One has a C13. If you are considering a C13, be aware that it has thick composite rails that won't fit some seat clamps. I had a C17 Carved on my touring bike, but I switched it to a Selle Anatomica. I might switch it back as the Selle Anatomica seems to have sagged a bit.
On my triathlon bike, I have an ISM PN 1.1. It looks like a torture device, but it actually is fairly comfortable when on the aerobars.
