Revolver for me.
Because I've been listening to The Beatles since I was so young, I unintentionally REALLY strongly associate every song with the cover in my mind. And so I love hearing the Magical Mystery Tour ones cos I loved the cover, and etc. etc.
But to say its like the major transitional album for them, and one of the most psychedelic things they ever did, the fact it was filled up with those crap drawings and those rubbishy horrid little b/w photographs displeases me. If that'd been used for the earlier stuff, then fair enough, but they should've done something much prettier for it. Its almost spoilt the album a bit for me, as gay as it sounds, and I can't make it not do.