I've been looking for a while now for a 250 hps set up. I'm not finding alot in my price range that is air cooled. My price range is $100-$250 and it's going in a box that fits a light up to 28" and already battling heat with my CFL's. I found a 400 watt'r for $195 and it looks good. Has anyone used lights from MBKP international LLC ??