I think you need to look at the advantages and disadvantages of the lights and use what is most appropriat to your grow. The best things about CFL lights is they produce very little heat and can sit practically on top of your plants, a very good thing for those growing in confind spaces, CFL lights are also made to produce very precise spectrums of lights so you can have them at the perfect Kernal rating for the plant whereas MH and HPS have a broader light spectrum and a lot of the light produced is not used by the plant. MH and HPS lights burn very hot but have much higher lumen output so are very well suited for larger grows where space is not a problem, they need the higher lumen as so much is wasted by having the light further away from the plants. Personally I keep my mothers under CFL and my main grow under MH then HPS (depending on wether im vegging or flowering). Seem to get bigger yeilds from MH @ HPS combinations than any other type just on its own.