I agree. Some of the Amazon reviewers are extraordinary, a couple of them, TC members.True, but there are some amazing reviewers on Amazon. When I'm ready to purchase an unfamiliar piece or a piece I would like another recording of, I check out 7 or 8 or so regular reviewers who's tastes are simpatico with mine, and make a purchasing decision based on that.
It took a long time to find a bunch of (good and thorough) reviewers that I found have similar tastes, but now that I have them, I refer to them often and it saves me a lot of time. More often than not, I am not disappointed.