I've experimented with ceramic heat emitters in all sorts of situations. As far as the snakes doing well, I have only positive things to say. The heat produced seems to elevate the snake's internal body temp, making it very beneficial. I've tried it on boas, pythons and colubrids with success.
One drawback is the very high temp of the heater surface, which means you must have a screen barrier between the element and the animal. The hot surface of the bulb can burn you too, so be careful. I had to discontinue use because my 2 year-old son reached for the aluminum dome with a ceramic in it. I stopped him in time fortunately. The dome is not as hot as the bulb, but the situation made me realize the potential for injury.
I never have had a ceramic element burn out yet, after 5 years so far. Also, a 60 watt bulb will heat a good area in a cage that is 18 inches high or less.