There are a lot of bands I would say mean more to me, and that I probably like more, but I think it's the familiarity of their music, and the fact that there's so much of it, that sets them apart for me. I do think Sgt Peppers is overrated. Still a good album (it's got a A Day In The Life on it after all), but overrated. '66 is my favourite Beatles year. They still all wanted to be in the band and were friends, they released Revolver (which is awesome) and the Paperback Writer / Rain single, and Ringo's drumming on all of these recordings was stella.
As for the McCartney backlash, I think it's mostly down to what a knob he's become. Apart from Ringo, I think they were all pretty horrible people sometimes. George was quite an angry and bitter person, but because he was quiet people thought he was laid back.