They will prob.all work about the same. However the cool tube will prob. run the coolest if vented properly, then next would be the Virtual sun, then the gull wing which will get hot as hell. No way of directly venting it.
I've been checking out BaddAss bulbs too, but I'm glad to see that you posted those choices too. Lots of great technologies out there and it makes it hard to choose between them all. Advanced Nutrients | 600 Watt HPS Bulb | BaddAss Bulbs Great discussion....
