Also my justification for the increase in price to the RHP is that it is only 1.75" tall, spreads the heat out over a much bigger area, I can touch it briefly with no burns (though it can get over 200F surface temp read from my temp gun)so no need for very eye soar cage around it, only 3 screws and its installed and reported longevity of it. Add up the price of 7 or 8 CHE bulbs, the cage, the fixture and the shear giant ugly eye soar hanging like an old insane asylum movie light in the middle of your cage. I have always hated the one in my Dragons cage but not sure RHP's were around when I built it or at least I didn't know about them.