Hi five bro good to see yaI think id need more cobs five mate to match the power of my goliath.these cobs are good .but in a big area ud need quite a few cobs to keep temps high and even covarage unless u have a heater.these do great in a small space.so to compare them to say a mars 300w led in a small tent and these cobs.the cobs would piss it mate.as i say cobs defo do the job and cheap to run.