I have used a few different brands and all of them worked well on plastic and glass if used with a thermostat.
The only type I would not recommend are the thick green matts, I have seen a number of cases where they have malfunctioned, started melting and almost catching fire on one side while the side with the thermostat probe stayed at the correct temp
Yeah, I had one of those green 'Ultimate Heat Mats' and even with a thermostat it still melted (slightly, not all the way, which was of some relief to me) through the bottom of one of my enclosures in a certain spot. Since chucked it out and will never use them again.
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