I'm gonna guess it's going to come down to what you like more - authenticity to the original recording, or hearing the actual improvements better. I tend to fall into the latter.
Not to post some aphorism, but get what you like. For all this originalism talk, it's laughable to be lectured on how
you should listen to the Beatles by people who weren't around for the first go-round. I wasn't, and don't care what some self-appointed Beatles curator says is the respectful, intended mix of the Beatles. I prefer the old Mono, but so what? Macca, Martin, et al can say what they like. If Stereo is better, I'm going for that.
Reading around the net, some people seem to have taken Lennon's Jesus comment and inverted it into some proclamation that you must treat the Beatles with holy reverence. Too bad Lennon isn't here to take a big steamy shit on all of'em (and us). It would at least temper the mobs enthusiasm for casting stones at the Stereo infidels.