though I have heard of LED drop ins melting the plastic reflectors of some lights, I don't use my everLED as often as my MagLED, which is mounted in my mag3D and when installed does not touch the plastic reflector. I thought I'd inform you the possibility, though it hasn't happened yet on mine [I can guarantee nothing will melt in a maximum runtime of maybe 5 minutes, but thats all I can say on my part]
for store bought lights, several PR based flashlights use the reflector as a locking ring and holds tension to the battery. manufacturers know that the stock PR bulbs [krypton/xenon] will never heat up to the melting threshold of the plastic because the batteries wont last the lamp running at full capacity very long. but an LED is not only more efficient, it requires a thermal path to dissipate its heat....and if the LED is locked to the reflector, the heat will cause the plastic to soften, and the tension will warp the reflector until stress from both sides reach equilibrium.
my previous [and only experience] was running the everLED in a 2D Eveready [ironic isn't it
a $1 light using a $30 bulb], I left it on for god knows how long and when I found it, turned it off the bezel was a mess:shrug: