AVS is the way to go. Not only is it the best way to keep minors out of your sites it gives you the best conversions on anything you are upselling! If you are upselling sponsors or your premium sites you can expect to see ratios of 1:30 or less on average.
You can't beat that!
If you really need more good info on AVS go to
http://www.avslounge.com they have a great AVS focused board and visit the boards on all the major avs sites. All of them are very helpful.