BTW Lostio good thread!
Thanks.
I think all albums represent a little of what the Beatles were and Abbey Road puts it all in one. My main choice would be either Abbey Road or Revolver.
Abbey Road has their style (You Never Give Me Your Money, Maxwell's Silver Hammer), their ballads (Something, Here Comes the Sun - George has the credit in this case), their rockers (She Came In Through the Bathroom Window, I Want You), and some still upbeat (Come Together).
Maybe Revolver would supere Abbey Road, because it also has the psychadelia effect, which was a big part of their career.
It does still have their style/creativity (Eleanor Rigby, Got To Get You Into My Life), ballads (Here There and Everywhere, For No One), heavier rockers (And Your Bird Can Sing, She Said She Said), and the psychadelia (Tomorrow Never Knows, I'm Only Sleeping), a bit of their still upbeat (Taxman, Doctor Robert) and some of the outside-influenced songs (Love You To).
But I think that Abbey Road represents what the Beatles actually were: a creative upbeat band, which could be soft enough to make ballads and rough enough to make rockers. Revolver maybe resumes more of what the Beatles DID, and not what they actually stood for and represented. So, therefore, I'd pick either Abbey Road or Revolver.