We're doing something no one has ever done before -- well, sort of. Each LED company that takes its craft seriously focuses on buying high-quality components that will last a long time (read: not fail within 2 years) and have high efficiency/output ratings. To test LED grow lights comprehensively, you really need to send them to a laboratory that will run the light through a battery of instrumentation. Each test from these companies is not cheap. For all the testing that we're requesting, the bill can run up to about $1,500 per light. This was no cheap endeavor, but we wanted to create the most unbiased, comprehensive, and informative comparison review test on the web. Therefore we needed to be using the best equipment available to do our testing.