Well, when I use PR for fiction, it is mainly for English fiction. I found that I get the story better, even if there's a lot of vocabulary missing, and, with books of difficult style, I'm more concentrated and get into the feeling of the book much faster.
For example: I tried "The Lord of the Rings" and didn't get a kick out of it. Than I PRed it and set out to read further, and voilá, I really could get absorbed into the story.
What goal did I use? Something along the lines that I want to be able to really enjoy the book, regardless of the language and style.
Jens