I dont know why yhey suck exactly. Sure they r made from chinese parts and there r some great American made.lights. but if money is no problem....which is rare.. my 2 kind leds are great. Best light ive ever used and puts all hps and hid to shame. I dont need someome to tell me they suck all i need is to see my awsome vegging growth and the budding is great too. It has eight timers and i swear almost no heat