apart from size (width); genre (road or MTB, etc) or gender ... everyone's bottom is different - any doubts just watch people walk. some can't even walk in a straight line - which is my pet peeve walking at lunchtime at the mall ... but I digress

you're gonna have to try some saddles and find out what works for you. I bought a saddle measured and recommended just for me and paid almost $100. I put 2,000 miles on it last year. I thought everything was fine until I bought an old MTB for $30 and then fell in love with that stock saddle. I'm thinking of trying it on my road bike.