Vol. 1's graphics are fairly lackluster, as are its stars, with the notable exception of Nikki. Vol. 2, on the other hand, shows excellent production values, features some highly-listenable industrial music by Reflux, and contains enough talent to keep viewers riveted.

Even the extras are better on the second volume. The "biographies" only give a few stats about the gals, but what's behind the text is footage left over from their sex scenes, so it's like getting a second (if mini) dose of the hottest action. And where the first volume had seven stationary "jump to scene" buttons, the eight in Vol. 2 are animated. (Future Works, which did the editing on Vol. 2, should probably get the credit.)