This series starts off slow, but picks up promisingly. In the first two volumes, all the scenes take place in the same RV, and follow a set formula: Watch her get undressed looking down the hall of the RV into the john, watch her masturbate, add a partner (often the same bespectacled, goateed guy), and watch her clean up afterwards in the same down-the-hall shot. Girls are mostly older -- keeping in mind that on Planet Porn, "older" means "over 25."

Vol. 1 starts off with a tepid go-round featuring a 40-ish redhead with a Pocket Rocket and then with a guy, but gets better with a warmer go-round with a buxom tart who uses a large vibrating dildo to work herself up for her partner. Vol. 2 has a young, somewhat overweight black girl, who is bemused by the goings-on, and then a 30-ish one in a Tina Turner wig who is very vocal.

Vol. 3 hits stride early, with a cute young thing with a pube trim fingering herself to an O. The cameraman wisely holds the shot on her pretty , expressive face. When the guy joins in and starts to eat her pussy, she gets lost in pleasure. When she gets up to kiss him, she is utterly turned on, a state she remains in during the whole scene. It's worth buying and stocking Vol. 3 just for this scene. Part two, in an apartment for a change, with a 40-ish blonde and a pudgy Hispanic guy, is acceptable.

Vol. 4 features Kendra, who has a hot tub with a view of the city lights. After some banter with the cameraman and a friend, she strips and gets in the hot tub, positioning herself over her favorite water jet. The friend joins her, and they go through an elongated sex scene both in the tub and in the bedroom, and then do an encore on the living room sofa. These two have been together a while, and it shows. Casual, informal, and hot, Vol. 4 is an excellent starter for amateur-genre amateurs.