Alan is trying to find a good tablet for his teenagers. Is the Lenovo Yoga a good option? And who should he trust for reviews? Leo says that Consumer Reports is trustworthy because they don't take advertising. But it also depends on the product. In some areas, they don't have the expertise and tend to review from a "normal joe" point of view. That's often the beef of audiophiles. And computer geeks have a similar complaint. Regardless of these concerns, they're worth looking at.
Alan shouldn't trust just one source though, he should look around. Amazon user reviews are good. They're crowd sourced. Just throw out the highs and the lows and he'll have a good barometer just how good or bad a product really is. The Verge, Engadget, and PC Magazine are pretty good as well.
Google's Nexus 7 is a good tablet option. Samsung makes a good tablet, too.