I don't care what light people use but as for another question. The answer is. My dick is bigger than your dick. And to those that say size doesn't matter, that's just what some girl told you so she wouldn't hurt your feelings. I'll let the little boys argue over lights.
Seriously though. This topic has been beaten to death. Grow some pot and quit worrying about what light someone else is using. And to those that go on and on about HID being outdated technology and calling people that use them as being stuck in the past. Well kiss my ass. There are those that are respectful and then their are the dumb chumps that think they're cool because they spent $1200 on a light. It might be a cool light but it doesn't make you cool because you bought it. A good portion of the growers posting don't even know what a healthy plant is or how to keep a plant healthy. Going on and on about all the shit they dump on their plants, bragging about their lights, throwing a screen up over their plants that serves no purpose because they don't even know how to scrog. Then they post pictures of their plants that look like they just took them out of the oven with their crispy fried dark green clawing leaves with all kinds of spots and other issues. Then people make ridiculous posts about how the plants look good when they look like shit. Some people might as well be growing under T8's because they screw their plants up so bad that it doesn't matter what light they use.
Check this out. I know people that actually kill it with big harvests of killer bud every year without the need for artificial lighting. They use what's called the sun. It's been done for thousands of years. Long before electricity, diodes, LED's, HID's, etc... Can you believe that? Amazing isn't it.
Rant Over