Good writing vs. good story-telling

What keeps you reading -- the wordsmithing or the story? Or something else?

I was trying to read a book that had gotten really good reviews, and while the writing was undeniably good, the story just wasn't compelling enough to keep me reading, and I decided to stop a 3rd of the way in. I think I just didn't care what happened to the characters. (Anyone else come across any glowingly recommended books recently that just left you cold?)

In comparison, there is an urban fantasy series where the writing frequently makes me roll my eyes, but somehow, I keep gobbling up the books. My daughter said they must be like Doritos -- once I eat one chip I keep going until the bag is empty.