Some writers have a very distinctive style, and whether you like the style has a lot to do with whether you like their books. Patricia McKillip is an author whose lyrical style I love, and I will read pretty much anything she writes just because I really, well, like the way she writes. I particularly like her Riddle-Master trilogy, which hits a lot of other buttons for me (Welsh-like riddles, non-romantic love, betrayal, redemption), and I was really surprised to learn that a friend whose judgment I totally respect couldn't get through even the first of the books -- because she doesn't like McKillip's style.
For another example, Catherynne Valente is an author that a lot of people really like; I don't really like her style, so I have a hard time with her. (Interestingly, her extremely-lyrical style reads to me as similar to McKillip's, and I don't have a good read on why I like McKillip but not Valente).
On the other side of the fence from lyrical, there's a much more staccato, exuberant kind of style, which is often used for young-adult SF. Cory Doctorow (For the Win, Little Brother) does this; so does Neal Stephenson in his SF books (e.g., Snow Crash). Sarah Rees Brennan, though she doesn't write SF, has a similar kind of style. This kind of style can definitely highlight the exuberant ideas-based foundation of these kinds of books.
Other writers, I feel, have a very transparent style. Allegra Goodman's novel Intuition is written in a style that is meant not to get in the way of what's happening in the book -- because it's a book about science and scientists, this makes sense.
What kind of style do you enjoy? Are there styles you don't enjoy?