Radiant Heat Panels are similar to ceramic heat emitters in how they put off heat. The difference is the RHP do not get scorching hot like a CHE or bulb. Also, the RHP will last 35 years +. Yes, they are expensive at first, but you don't have to worry about them burning out like a bulb. They are low profile and go inside of the cage, consequently there is no need for those dome lights. I plan on stacking a few cages, so this is a very good selling point.