I currently run 6 of the 942 mogul 315s from Advance tech in cheap horizontal open reflectors over 3 plants for my personal grow and couldn't be happier!
We are gearing up to build a small legal commercial grow and will be using around 30 of the greenbeams in a modeled room.
Hey biggreg, swing by my thread in the signature. I'm using 16 GB's in a modeled room. You should post up your room when you start putting it together. The thread of mine is a little boring right now as I was waiting for a contractor to finish up the electrical and HVAC, but I shit canned him and have another guy lined up to come over and finish it up. Should get interesting soon.