You can use the reviews on every major site if you know how to read them. It's actually fairly simple; the best reviews are meaningless. Aside from the obvious shill risk, they also don't usually tell you much.
No, the best reviews are the lowest reviews, possibly the "middle of the road" reviews too. Read those. Those often will have real data that you can use ( failed after a week, has annoying click, doesn't work with x, ect.. ).
There's a bit more to it than that, but that should get you rolling. As you read more reviews, you get a feel for the idiots, shills and other wasted reviews.