I would check out cobkits.com. The Luminus cxm 22 3000 or 3500k looks great for flower. They have great efficiency at 50 watts. Their Citizen COBS also look good. I would say at 35 - 50 watts a square. AroundWell I'm kind of thinking about going with cobs, considering the more even light spread, ready to go assembly and that I don't know anything about qauntum board builds and really don't have the time.
So I'm working with a 6x3. What do you think I should go with for cobs and number of cobs?
7 foot ceilings, probably flipping around a foot and a half tall so don't really need super strong 100 watt cobs.
I'm wondering about 12- 50watt cobs for 600w over the 6x3. Would that be a bit over kill?