Wa-a-ay off topic here but these 2 sites seek out the best opinions from others and then subject a category of good to stiff scrutiny using proven experts. Both are book-markable. Not merely product info but also what good prices are and alternates to stuff chosen and why.
http://thewirecutter.com/ << deals more in the tech end of the spectrum and like that NPR program, "All Things [Are] Considered"
http://thesweethome.com/reviews/grow-lights-we-like/ << more about the home, and lawn and garden. This is a prime example of the in-depth research they do on even the humblest of objects.