i am currently preparing a grow room indoors and i want to use cfl's, lots of them. i was just wondering if it would just be better to go with a hps lamp of the same wattage? sounds like a dumb question but does 400 watts of cfl lights cost the same amount of money toward the electrical bill that an hps liight would? i was planning to make an extremely well lit room with cfl's, but now im thinking i might as well just go for the real deal with hps. any drawbacks to the hps? any help would be great, thanks