Hi Everyone ~

Thanks for responses!

The team pro is 160mm by 260, and the b-17 is 170mm by 280.

I am guessing my sit bones are 143 since I was measured and the guy at specialized said that I took a standard 143 Specialized.

Here is an excellent side by side comparison:
http://www.wallbike.com/Various.html
http://www.wallbike.com/pros.html

Some forums and sellers say that if you spend much time in the drops that you should not use the b-17. But there are people out there that use it and get in drops just fine so go figure.

I did see after more reading that the team pro is not as adjustable forward and back motion as the b-17. So it looks like I will have to go with the b-17 because I am somewhat of a freak with a 51cm bike and 5'4. I have to have my seat all the way forward towards the bar.
So that answers that!

Was doing a search and came across an English add, it was great!
An English model, thin , more on the pale side, with a bigger "bum" was on her bike, totally naked back side shot. Old cobblestone streets, late at night, picturesque. It completely made the point, this saddle is so comfortable that you can ride it naked! LOL. I loved it. I wanted one bad then with visions of Lady Godiva danced in my head. Good thing I'm not in my twenties anymore... (winks mischievously) !! heh.

http://en.wikipedia.org/wiki/Godiva

Ok, thanks again to all of you.