Citizen 1212s mate. 200w in a 3x3 tent and it seems to be plenty.
yea a friend has just asked me if i can make him a light...thinking of going with 2 lights made of 5 No. 1212's with a meanwell HLG-185-1050mA driver...not sure if that will be enough for a 1.6x0.8m tent but my 8 cobs at 700mA are doing absolutely fine of a HLG-185-700....what current are you running yours and how many cobs?