I actually listened to this one recently and it's aged well for me musically, not to mention that I have fond memories of it because it was part of D-V's first pop quad release (along with The Main Ingredient's Euphrates River) and the first liner note writing assignment I got.
It's still an 8 from me though, based on my reservations about the Dick Bogert/Warren Vincent mixing style though. It's sort of a "so close, yet so far" proposition - as it stands I can still reccomend this album (with reservations, but if it was mixed with the drums in stereo across the rear speakers and the bass guitar in the phantom rear center position, this would be an unequivocal home run on par with the Doobie Bros. quad mixes in terms of quality.