I am surprised no-one has mentioned the width of sit bones. I had a Fizik Arione and quickly realised it was way too narrow. I am slim, but my sit bones were not supported by the saddle as it is only 132mm wide at the widest point. You need to measure your sit bones properly using Specialised's measuring device (in most bike shops). If your sit bones are between 100mm and 130mm (most people), you need a 143mm wide saddle. I know Specialised and Bontrager makes this width, with Bontrager going to 146mm. Most of the other fancy racing saddles (Selle Italia, San Marco) are 130mm wide and will not support you properly. Of course, set-up is as important i.e. seat should be level etc. Good luck! p.s. I bought a Specialized Toupe 143mm. It looks very hard, but is very comfortable. The Phenom is great too.
