OK so let me think about this... lets say a better bulb gives you a 5% increase in yield. ( it will give you more but I believe in setting the target low) Kitty is pulling down 900g per light 1000w. An increase of 5% would give you 945g under a better light. Thats an extra 45g per light x 14 = 630g =$1,100.00 per cycle @ 6 cycles = 3780g extra a year = 8 1/2 pounds more for 560$ more spent on lights. So you got to buy a new light to check it out for yourself... let me see is it worth it???? If it works for you you get 25 grand more a year and if it don't you spent 40 extra dollars.
Which makes it more worth it to try............ My bulbs right now are made from Sun Systems or C.A.P.