Actually, results with various lights is a matter of technique needed for each type light. I've seen some outstanding grows with CFL. T5 also. Heck, we have people that grow POUNDS of weed with T5's. Small scale, CFLs work ok especially on a tight budget, when you can by a 4 pack of 23 watt ( 100 watt equivalent ) for less than $10.00 if you shop around. And now there is a new option for people, 9-15 watt Red/Blue LED spotlights. ( You can get various spectrum of white also ). I built a DIY growlight from the for a small cab. It works great! But you know what? Right now, a have a couple of CFLs mixed in with them because I too believe the "white" light is important. I'm in the process of buying some Warm White 15 watt LED spotlights and will do a grow with just these white lights to see what the results will be.