The brand is Samphon, I have one of their 480w lights(I paid $300) and a Mars Hydro FC-E4800($360). No issues with either one and I can't tell a difference between plants grown with one or the other. You can buy their less fancy 480w model for $270 right now on Amazon. Product link
Less than 80 degrees easily at the moment with the recent cold weather, if it got any cooler I was debating about moving the driver into the tent to keep it warm.
I did the same thing with my 3x3, it is indeed an awesome spread. My 3x3 is actually 35x35 inches so it's a tight fit with the 4800. I like that I can put the driver outside of the tent, really keeps the heat down.