I like some Elvis, some Beatles, but I'm more of a Rolling Stones, Doors, Led Zepplin, Clash, Iggy and the Stooges type of guy.
Beatles are over rated. Just because you're the "pioneer" of something doesn't make all of that work good. They get too much credit for simple tunes.
But if I had to choose, I'm guessing Elvis was the more fun guy to hang out with. Liquid cocaine and gold Cadillacs anybody? Fuck the Beatles and their bullshit copyright lawsuits they're always in. Elvis made it rain, while the Beatles (post John) like to hang out and give hand jobs to Lars Ulrich of Metallica.