ok,ok,ok...I used to use Gman bulbs, used to. I have been using WAVEPOINT for almost a year and havent seen any ill effects. I personaly like them, havent done any PAR comparisons but my corals speaker for themselves. I just ordered 16 replacement bulbs, 8 for now and 8 for when they come due for changeing again. I purchased 8 from RCA and 8 from HELLOLIGHTING, i also get my MH bulbs from them cause they offer FREE shipping and are usually cheaper by $1-$2.