Five Star Reviews

I was re-reading my recent book reviews and noted that I was generous with 5-star reviews. I don't give these out lightly, although it might seem that way. Apparently my most recent reads were of the 5-star variety, although I've read some other books lately that wouldn't merit that rating. For me to rate a book highly it has to have a plot that keeps me turning pages, and must be well written. The story must be unusual in the sense that the topic hasn't been written about in this way by someone else. I like details if they advance the story, but when they're overly done I want to "fast forward". So I'm wondering, what does a 5-star review look like to you when you read a novel? If you've read any of the books I've rated, and disagree with my rating, I'd like to know that too. As readers, we all come from different perspectives. Let me know yours!