I am a sucker for
http://www.sexkey.com
I like them because I advertise my paysites on my AVS sites. Lots of other AVS's like Pro Adult/Cyberage won't let me use certain banners inside the protective area.
I also have exit consoles on my AVS sites.
Since I try to get surfers to come to my Paysites and use AVS sites basically as a preview sites (I put about 200 pictures and 3 mpgs in it) it works great for me.
If you are looking for an AVS with recurring, I probably would go with Pro Adult. I did try them out at one point but didn't get much traffic and couldn't push my Paysites.
I guess it depends what you are looking to do with the AVS site.