Lance uses "another" saddle that is covered with his sponsored saddle. Other pros do this too. But for the most part, they use stock Selle Italia, Selle San Marco saddles. Mostly the lightweight, "racer" saddles.
Bartoli, Rebellin and many others (for example) use the Selle Italia SLR (which, at 135grams) is one of the most minimalist saddles around.
Comfort is in the butt of the beholder. You just gotta find one that works for you and stick with it.