I get that there are people who either dont know how to build a DIY , or they dont want to take the time to learn, I found the DIY threads were so informative and with some time spent looking and reading, asking a few questions, I think just about anyone can build a DIY light!!! especially if they use the cob holders, no soldering, no need to drill and tap if you use self tapping screws or drill all the way thru and use nut and bolt,
Sometimes I think CFL growers just dont want to look past using a household socket and bulb, and they are typically very very small growers and need good stealth, i get that, but they could also benefit from using small vero lights instead,,
my Cree cobs pull half the power of my mars 300, they put out 2 X's the light power and less than half the heat,
If I run my mars light I have to turn the fan up so high to overcome the heat issue that I blow my stealth cover
1000's of dollars in leds?,, come on you can assemble the latest 4 cob cxb3070 fixture for around $250 bucks, and it will BLOW AWAY even the largest mars light,
just sayin