Hey all I've been using the new Lumatek 600w ballasts with great success using Hortilux and another brand I can't think of. I called HID hut and they said their brand bulbs can be used with the new Lumatek ballasts and in fact said they would work better than the hortilux sooo I need to know based on paying 62.95 for a Hortilux and 34.95 for HID what bulbs to get and checked out Solarmax too. Any other bulbs better? Please no responses about having great success with the bulb you"re using if you have nothing to compare it too, I need side by side or any tech info you can offer. I guess I need to know the efficient way i.e. switching every six months...a redder bulb...I hope I'm being clear thanks so much...