Beware the sales/marketing propaganda. Growers have often joked that you can grow cannabis by candle light or moonlight so it shouldn't surprise anyone that they grow under LED too. The question is: how well compared to other lights? The claims in that area are, to be nice, unbelievable. The modularity concept isn't new but it makes sense but they shouldn't hang their hat on that so much. Dependability is better than ease of repair and assembly. The 675-XG (only 380w actual draw) only has 3w diodes yet they claim it beats a SS880w that has 660w actual draw and 5w diodes. If anyone buys *that*, I have a bridge for sale...