Beatles' Best and Worst 2-Chord Songs

Including their solo stuff.
My vote is for "Paperback Writer" as the best 2-chord (G7 and C major)
song -- it is so lively that one barely notices or cares that there are
technically two chords.
And "Give Peace a Chance," utilizing C major and G major is the worst. It's the product of John's being an acid casualty and allowing Yoko to
convince him that his music was just "the music of the people."