Dunno what it is for me tbh. I could write a university-level literary analysis on Code Geass, extremely hyped to ball in my rec leagues after watching Kuroko, I've been emotionally eviscerated by SNAFU, had serious envy trips from Inu X Boku SS and Saekano, and felt in a completely ethereal, unbelievably mystic world from watching the Haruhi movie.
So I can't really say. Tbh CG is probably the highest quality and overall best show (ever, imo) but it failed to emotionally destroy me as did something like SNAFU or even Saekano to some extent and it didn't provide hype so intense you get chills like Kuroko did, but it still stands to me as the overall objectively best one.
SNAFU, KnB and Saekano are still my favorites tho.