RBI Radiant Heat Panels

I have never really used heat panels, always went a basic method such as bulbs or flexwatt... the closest thing that I have ever really used came original in our 4ft. boaphile cages... and needless to say, I was not impressed, and they do not work for much besides colubrids.
That being said, I have been reading up on RBI Radiant Heat Panels, and they seem to be a decent product, with promising heat results. My questions are...
For those who have used them, are they safe to use in a plastic caging? We use alot of "boaphile" style cages, most of them are in the design of being in one unit, w/ 3 sections. Or would they melt or cause issues to the plastic cage itself?
Do they heat as well as a traditional style? Meaning do they create a warm enough cage for most animals requiring a 85-95 degree cage?
Any info or thoughts are appreciated!