Although there is some truth in the fact some LEDs are quite shite others out there are very good, admittedly vegging appears better with leds than flowering, how ever if you add a cfl RED spec to increase the spectrum bandwidth, an HID yield equivilent isnt out of the question,The bottom line is this,,, if you have the money to buy a UFO then why not just buy a 400 watt hid or a 200 watt flouro? Leds are a waste of momey any if you look through riu enough you will notice that most grows that started with Leds either died out fast or had bad results. Imho it is a waste of your hard earned cash, so unless you have dough like that don't become a victim to the Leds...
,,,Worm