Consumer Reports has no advertising and they buy everything they review. When possible, they test items in blind trials. The magazine is also published by a non-profit. On the other hand, Amazon reviews have been gamed by both consumers and companies (two examples: Spore, Belkin). You can't be sure the people writing reviews actually bought the products they are reviewing. In my eyes Amazon reviews are better than nothing, but they don't come close to the value of a review by an unbiased party like Consumer Reports.