is there much difference in use of electric between a hps and cfl if they are the same wattage,,, might be a stupid question but i no the cfl are basically a giant energy saving bulb (like the ones we get in the uk) but at high wattages do they actually save energy compared to a hps. the reason i ask is i would much prefer to use a hps but dont want to run up a huge bill but if it turns out it would costs about the same as using a cfl then i might aswell go for the hps.