I woulda opted for Satisfaction.
It's very hard not to distingiush between rock and roll and rock but Satisfaction sort of bridges it.
There is no best song and Rolling Stone the magazine is awful....always has been though it did spawn a few interesting writers and critics.
Flippo, Young, O'Rourke and yes even HST...but one must be on drugs to appreciate him.....forget FALILV....Hell's Angels is his only coherent work.
Of course, my top fav is 'Satisfaction' LOL!