Anyone using LED's?

Me and a friend of mine recently purchased a starter led system from growwithleds.com and i was just wondering if anyone here has tried growing with any kinds of LED's and how did they work.

By the way, we purchased the bubbleponics system from stealth hydro along with some feminized white widow seeds from marijuana-seeds.nl. Any input would be appreciated. Thanks

i dont want to rain on your parade but i have yet to see a LED grow make it to flower, i dont think they penetrate enough to the plant, maybe it was just those LED's but im just giving you a heads up.

LED stuff is in advanced. There's a bunch of it.