my switchable 1000watt (currently using HPS) was $350, but you can get a 400watt HPS for $119 at HTGSupply. you talk about price, but my power bill is only $30 more with the 1000watt that i only paid $350 for...i read about the UFO light in high times, but i am beyond skeptical - especially for the outrageous price. speedhabit already stated this, but the amount of supplies you could buy with $1200 could transform several rooms into the PERFECT grow areas.
the fact that you spent $1200 on something that grows comparable to a 400watt makes me raise an eyebrow..you talk about heat, yet in my tiny apartment 1 oscillating fan keeps things nice and ventilated. in my opinion, you should have invested the $ in something else - i see your 600watt outgrowing the LED.
im VERY interested in seeing the results, so make sure to keep us posted! i want to see what $1200 of LEDs will do, because even if it DOES grow similar to a 400watt - it would still be a ripoff in my eyes; heat/price/ballast+reflector are very easy to control - you could have bought an air cooled reflector for $85, that would have solved the heat problem 100%. then add a fan for ventilation and bam, no issue at all.