Your favorito! anime art style?

There are way too many varieties of art styles out there. I just want to know your opinion.

I really find the art styles of anime like Hyouka and K-on very cute, and if we talk about sexy, Vampire knight o Diabolik lovers, maybe?
I found No game No life art style amazing! (though not liked por all)
and there are some others I found cute too...

Few best ones for me (not in order) -
No game No life
Valvrave The Liberator, maybe?
Nagi no Asukara
Uta no Prince sama
Your lie in April
Sket Dance

and the lista goes on...

What about you? What's your opinion...