LEDBenchmark [1] does a good job with their own spectrum and flicker graphs. So far, the LED bulbs I have gotten based on their results have been good. [1] htt

LEDBenchmark [1] does a good job with their own spectrum and flicker graphs. So far, the LED bulbs I have gotten based on their results have been good. [1] http://www.ledbenchmark.com/ http://www.ledbenchmark.com/