Does anyone have any expeirience with these reflectors? I bought 2 of them for my 2 600w bulbs/ballasts. Seems to be a good price at 89 bucks a peice. I tried reviewing different brands and styles and figured these were good for the price. 6" Air cooled. Any comments would be appreciated. http://www.bestgrowlights.com/site/403863/product/SSI904425