I was over at Aquatic Obsession this pass weekend and was talking to Wil about led's. He told/showed me this link where most of the led's on the market have been par tested. It is very informative and you will be surprised at some of the par readings. Link is below. Just click on the LED tab on the site.
Thanks Wil
http://www.manhattanreefs.com/lighting
Thanks Wil
http://www.manhattanreefs.com/lighting