Definitely Paul for pop and George for the deep stuff.
George Harrison is probably the kindest, gentlest soul I've ever seen in a celeb. He was pure and very talented. A good watch is Concert For George...I have the DVD, and beware the first disk is all the Ravi Shankar production part. The rest is so good it'll blow your mind. The musical lineup is fantastic. Great overall production, too, as would be expected from EC.