I got one of those UFOs from that dude on ebay to try LED out. Has been working great for me. My first grow with it I used two 26w CFLs for light supplement based on someones advice. Worked great in veg and flower. I actually let the main cola get within 6" of it and it seemed to "burn" the leaves so I had to back it off a bit.
Second grow was hydro under it and vegged it for the most part with just the LED but some CFL light every now and then. On my third grow with it and was vegging a single plant fine at about 10-12" away.