Hi all, I have to fit some lights on the back of a house, customer has suggested 3x 500watt halogens. I will feed them through a stand-alone pir. Does anyone have experience of energy efficient ones, ie are there any that come close to giving the amount of light of a normal 500w halogen? Also, what about halide lamps, they seem to be quite low wattage, what sort of performance do they give? This is a 'money no object' job so i'd like to get it right! Also if I do use normal type halogens, are there any that are better quality than the usual ones, they don't usually seem to weather very well, corrosion, paint flaking off etc.