Ok so currently im runnin 2 600 watt hps/mh looking to replace that with leds/cobs whichever.. anyway i have seen a few that seem to be pretty decent for being no name brands.. are the cobs that much better then reg leds? My room is a 3.5x8x7 was thinking 4 of the meizhi 900(200.00ea) or 1200...