Future Funk is my personal favorite level in the game. I have a long history with this level and most of my love for it is due to nostalgia. I know it's not a super amazing level to most people but I don't care; I could play it for dozens of hours and not get bored. Now, that's not to say I can't point to any concrete things I like about it. I really do love every part of the gameplay and deco and, overall, it feels like a truly unique level to me. And despite all the nostalgia, this level has greatly influenced my taste to this day.

TL;DR: I'm very biased from nostalgia but this is peak. 10/10