you really want pps? Otherwise I would say check out
www.youngporn.net best teen site IMHO...
For pps I don;t know, I know PB is converting very well for me....So when they have a good ten site try them out....Problem is with most teen sites at bigger sponsors that the models look like 20-25....
PB teen sites
http://www.teenthrills.com/?revid=10480&tour=1&popup=0
http://www.petitebeaver.com/?revid=10480&tour=1&popup=0
http://www.pureteenporn.com/?revid=10480&tour=1&popup=0
But when you compare that with youngporn it are really mature sites:D