Yeah LED's have come a LONG way, even in the past 10 years or so. Like Azton said, I too, was a huge proponent of MH and HPS. Ahh the days of stealing street lamps
So, since I got these brand new full spectrum LED grow lights, I have definitely changed my opinion on LED's. A far cry from the blurples of yesteryear, that's for sure! My electric bill is happier, too! The cost of running MH/HPS is just not practical, especially in legal states, where the weed markets are already saturated, you really have to do every little thing you can, to cut costs and compete. The heat generated by MH/HPS for example, is enough to jack your electric bill through the roof. I'm glad I don't have to have ridiculous AC units running 24/7 just to keep the temps under control.