I like the art (of course) and the characterization, in other words I like that it's good well-articulate shoujo.
The plot is a bit slow and depressing and by the latest scanlated chapter the main conflict, that
hasn't progressed at all. There was the time when
And just this recently scanlated chapter we've learned that
I personally don't like Kaname, yeah...
Maybe if the bishounen factor were one that existed for me, I'd feel that, but I don't.
Also, Yuki being so completely indecisive about how she feel about anything related to Zero or Kaname kinda throws me off, it's like I have no basis for how to think about the love triangle plot. (Kinda like Fruits Basket I guess, except that I don't follow Fruits Basket for romance, in fact I don't care for romance between Tohru and any of the characters in that series.) I like shoujo that is less subjective and less totally focused on how the characters think they might feel about one another at any given time.
But it's still a good series that I enjoy following, and I'd be able to read it at this pace for a while yet before I became tired.