It was really tempting to say The Beach Boys because I love "Pet Sounds" and I am ashamed to say I was not familiar with Paul's song. After a closer look though I have to choose Paul's very touching "Here Today".
Technically, as a song, I do prefer the Beach Boys' one, but Paul's song is really touching, especially for Beatles fans.
The long...
The Doors - The End
and the short of the end.
THE BEATLES Remasters! /// 16. The End - (ABBEY ROAD) - (STEREO Remastered 2009)
Actually I've already posted those two songs, and you chose the Beatles' one!

For me, it's hard to choose, both are classic moments in Rock history. Maybe the Beatles' track has the edge, because of those brilliant solos and the cosmic final lyric.
Rolling Stones - Good Times (Embedding disabled, limit reached)
Love - 04 - Good Times (Embedding disabled, limit reached)