It would be cool if you had a list of the stuff you already watched, tbh if you enjoyed K and gargantia means your expectations towards anime are not really high. I would recommend Fate zero (even though it's 2 seasons with 12 episodes), steins;gate, Bakemonogatari, Baccano.
Whoa there. #ShotsFired?
I'd say my expectations are high. I thought K was unique and fun and Gargantia was very well done (plot, characters)
If those two are your opinion of bad animes then maybe your expectations are too high bro.
But anyway. I'll update with some I've already seen. Fate zero was amazing btw.