Instruct: Classify Amazon reviews into positive or negative sentiment
Query: DVD Doctor or DVD Quack

I bought Digital Innovations DVD DR thinking it would help with troublesome rented DVDs. You know, the kind that some monkey has had before you and nicely scratched. Unfortunately, I found the documentation, while complete, difficult to follow. The one page "Getting Started" document has tiny, difficult to interpret illustrations. Worse, using DVD Doctor on a DVD that skipped turned it into a coaster that would not play at all. This is a terrible product with poor documentation. Try snake oil on your DVDs. It may do a better job repairing problems that DVD Doctor.