Classic Rock vs Modern Rock

Both. I tend to listen to modern rock on a more regular basis. But classic rock songs are more timeless. They're the ones that you can yell the lyrics to in a group full of strangers and someone will join in. My favourite classic rock is(are? my god, my brain can't produce grammar today): U2, Queen, Pink Floyd, David Bowe, Rolling Stones, and probably a couple of others I'm forgetting to name.