These lights use Illumitex leds which are good quality. But Funklighting is pretty expensive for what you get, roughly 100w. I'd say you'd be better off getting the Illumitex NeoSol.
Yeah I've seen it gk.........wanted to see a grow journal/thread anywhere on the web.......still strange to me that they don't offer that x5 spectra, always looked promising in this video. Illumitex says that the F3 outperforms the rest...............