I played MGS for PS1 and I was thrilled. It's truly extraordinary even today in my opinion.
Between PS1 and N64, PS1 aged much better. Besides Mario 64 and Ocarina, I guess I wouldn't play anything from n64 today, not even 10 years ago.
Indeed it is!. I still love playing it at least a couple of times every year. The OST, dialogues and boss fights (specially the one with Liquid at the end) make it one of my favorite games of all time.