Hums are great if given by a gal, but the one here is a loud buzzing technical problem which lasts throughout most of the video (at least the review copy we saw; maybe the other copies are clean). Fortunately, most of the contents have no need for too much lead-in and the strong points are the action.
Ed Powers experiments a bit here and, calling it R&D, recruits two dancers, Erin Austin and Autumn Springwater, who masturbate and suck Ed's toes for the delight of foot fetish fans. They won't let Edward screw 'em, so he dry humps Autumn's legs from behind and her looks of consternation and worry with his dick between her legs and near her butt is priceless. He eventually jacks off while they suck his nipples. Ahh, good old R&D. Powers later makes up for his lack of a full session when Jacynda and Lieng Lu join him for a threesome. And more.