I prefer classic. Retro is something new that is like the old.
But old school for a multitude of reasons. I'm pretty disgusted with the current state of gaming, I'm old (at heart), and I'm not adapting. I grew up playing games that were very different. No internet, now downloads, no DLC, no HDD, no cinematic nonsense, no games are art, no frills. Just gaming in it's purest form.
I do like 6th gen, and even 7th somewhat. But stuff is changing, games are outgrowing me, enthusiasm is waning. That's why I'm not picking up any more new consoles. There's enough gaming history for a lifetime. I prefer the classics.