I just bought a CHHC-4 which recently superceded the CHHC-1. I have 8 Super Sun 2 reflectors, money well spent. I bought a couple of NextGen ballasts cause they had nifty looking fans and and cool blinking leds, sold them a week later. (Remember FutureBrite ballasts with fans made by C.A.P.) Galaxy and Quantum are both good investments but honestly I think only Lumatek has been around longer than 6 years. When I bought my first lumateks almost 6 years ago every other digi ballast available then is either gone now or relabeled cause the prototype was complete garbage. They probably wouldn't sell as many NextGens if they were marketed as second generation FutureBrites. C.A.P. Timers are solid though and I have a 4 and 8 light unit. I have a 65 pint dehumidifier but I want a Santa Fe and they now have a compact unit for about $800 you can check out on ebay. I am running EYE hortis on lumateks and galaxys without issue so far but this is not recommended. I can tell you that GE Lucaloxes will work for years with a digital ballast with no problems. If you really have money to burn I would look into Lazymans suggestion of the Coolerado. Watercooling looks neato but I think a big heat exchanger with a carbon filter that scrubbed,cooled, and continuously exchanged the air in the room would be more practical.Finally if you have 2 rooms with the exact same dimensions a flip flop is ideal. You can setup one room with a 40 amp circuit and 4-10 ballasts then flip that right over instead of another 40 amp circuit and 4-10 more ballasts. Or you can stagger them like I do, that way a 6 inch vortex will cool 8 hoods cause only 4 lights are on at any given time.