im doing so much research an what im finding is that all 98 percent of them are made in china and packaged and branded for international business ie. spider farmer and mars , for example the spider farmer 2000 w led is $ 320 canadian on the spiderfarmer website not including tax and shipping , if you buy from amazon your buying the exact same light, however you can buy that exact same light on alibaba for half the price ....but shipping is more expensive so it basicly balances itself out give or save 50-75$, they all come from the same factory in china , they make every model of light you see online, the mars, spider are rebranded and packaged for companys like spider farmer and many other names of many differnt blurples. Black Dog led seem to be the best , but are hella expensive and not made in china , they seem to draw true watts , so the black dog 1000w is actually drawing like 750w, against say the spider 2000 it only uses 250 w. any way I think im going with alibaba for the spider 2000 with the samsung diodes its the "2020" version , its only $175 "migro youtube" gave the same one only the 1000w spider a very good review so i can only imagine the 2000 with my 1000w blurple should produce so decent results on 4 plants mabey 3 , ill keep updating