I think the mono box set is awesome. Has helped me appreciate both Sgt. Pepper and Magical Mystery Tour (never liked them previously). To me, these mono recordings, once you get used to their narrower soundstage width vs. the stereo versions, are wonderfully intimate and more believeable than the stereo versions. Though I do also still play the stereo versions in my truck or in the barn, where fidelity is not the main objective.