Castlevania probably has my favorite 8-bit OST, I don't know that many though... I had snes when I was practically a baby, and I played that shit till my eyes melt. I wasn't born at the cool kid age with all the nes titles.
Also I really enjoy a lot of my friend's older work https://soundcloud.com/itsvance they're short but sweet, currently trying to get him to make more >O>