The problem with most of these movies is they look cheap and fake. The girls look like they're putting on a show but they're really wondering who'll be voted off American Idol tonight. The lighting is flat, the color is flat, the sex is dull, and they cum when the director tells them to.
There are typically two ways around this. One is with the webcam girls or the amateurs who are shooting themselves in their own bedroom and selling tapes directly on the net. They're doing it for money, but they're a little more in tune with their customers, they're not concerned about time. The production values suffer greatly--even worse lighting, bad camera work (or a static camera shot), bad or no sound. But they make it up by seeming genuine. That they're cumming for real. That they care and are enjoying what they do.
The other way is to go upscale, which brings us to the Soloerotica series. This is the 9th installment in the series, and if you've seen the others then you know what to expect. 20 beautiful girls each in their scene masturbating. What sets it apart from the regular stuff is the photography: beautiful color, good camera work, dramatic lighting, striking sets, lingerie, the physical beauty of the girls. Each scene looks like Penthouse pictorials from the 1980s when Bob Guccione would put a little vaseline on the camera lens and shoot girls like Christy Canyon in these gorgeous, dreamy pictorials. Except Soloerotica is film, not stills.
For action it's pretty much the same as the rest of the stuff: some combination of girl walks in, strips, rubs breasts, caresses herself, rubs pussy, inserts dildo or vibe. Cums on cue (or maybe not). Next. If this were restaurant fare, most of the points here come from presentation and ambiance, not the actual food itself.
If you're tired of the mid-level, uninspired porn photography that dominates most of product, this is a nice change of pace. It's like XXX rated MTV. But ultimately it's empty calories, the same content as the Nasty Girls Masturbating series. If you want gloss and beauty, this is great. If you want real women having real orgasms, you'd be better off looking elsewhere.