Barbi Benton, playboy model in the 70's, was 19 when she started going out with Hugh Hefner who was then 43. When interviewed together, Barbi said this was a new experience for her stating "
I've never gone out with anyone who's older than 25". Hugh Hefner just laughed and said
"Neither have I hunny!!"
So I guess if you're Hugh Hefner, over 25 is mature!! Legend that he is!
I've always thought over 40 was mature. Not sure if that age will shift as I get older. And when i say mature I mean classy, intelligent and still extemely shagable. In my experience a woman learns to take better care of herself physically as she gets older and is also able to emphasize her assets better (not just talking about physical assests, but also dress sense, conversation strong points, etc..).
In real life I generally find women in their 30's and 40's most attractive and most suitable relationship material.
However, to answer the second part of the OP's question, this escorting business is all about fantasy to me, so
I usually end up seeing girls in their 20's. Dirty dog that I am, I cower in shame!
I blame it all on the great man below who's spoiled it for me!