LED's are good.......... compared to an incandescent. I would take CFL's over LED any day of the week.
Tom
LEDs have a long way to go. They could be doing so much more with them. Right now, they're trying to mimick HIDs. I think its mostly because its easier to put 5watt LEDs in a little group and say you have 90/100/whatever-watts, then it is to spread that out so you can get some proper coverage.
Once light manufactures, especially pot targeting ones, start making them right (and cheaper) HIDs and CFLs will be a thing of the past.
How many of those LEDs grows did anything but red/blue? I bet most of you didn't know you can flower under constant UV. ChlA loves it and Pf and Pfr have no reaction to it. In certain cases you can even flower under constant blue light as well and for the same reasons. And not with autoflowering strains (well, you could, but I'm talking about your standard 12/12 flowering strains)
LEDs are improving every year. HIDs, in 20 years, are going to be exactly the same as they are now.
-Loki