I actually see a lot of BTTF lines referenced here or there (e.g., "where we're going, we don't need roads" "who you callin' butthead, butthead" "make like a tree and get out of here" "Great Scott!" -even if Doc wasn't the first to say that one LOL).
My DH has a cool "Biff's Auto Detailing" shirt that he wears all the time that he gets a TON of comments on. I also see "I'm Your Density" a lot.
BTTF even predicted / inserted into the films a few "futuristic" things (e.g., drones, biometrics, voice-activated tech, wall-mounted flatscreens, etc.)
Maybe it just depends on what one happens to see / hear, but I think both are pretty well represented in pop culture.
I love Ferris but yeah, I guess I'm Team BTTF on this one.