AGREE with respondents that say Paul was the musical force of that group. It's so obvious when one listens to each of their subsequent solo efforts if it wasn't obvious before which it sure was to me. Speaking of their solo efforts, is there one better than the superb first of George Harrison, "All Things Must Pass" the quiet, unsung Beatle, maybe my favorite solo album of any of the Beatles. "Imagine" if you can a more mundane song than that one, never got it maybe someone can clue me in?
The Beatles were a unique group in the history of Western popular music. It isn't particularly about their special musicianship, or their pop appeal/charm or just their music, but their collective accomplishments along with the fifth wheel George Martin who can't be denied his contribution to the whole of what they became, a cultural, popular musical phenom of the mid 20th Century. Whether the music will endure in the future, I would ask the same of Gershwin Kern Berlin, Ellington Rogers or the many other great songwriters, We'll never know. How many know about Paganini or List in their hayday? If not for the film Amadeus how about Mozart?
So far as Quincy Jones is concerned, yes, he made some unfortunate comments, maybe even based in jealousy as has been suggested by his lack of musical chops, so what, he was good at what he did and so far as his opinions they are nothing more or less than those expressed by mine or anyone else's, Take what you like and discard what you don't, nothing's perfect!