> unreliable drivers that fail before the LED does, or kill the LED by heat or excessive voltage
That. I have a rather enclosed (little ventilation) ceiling fixture that in theory is supposed to be specced for up to 2 x 75 W incandescent. You'd think it will handle 2 x 9 or 12 W led "bulbs" just fine, right?
It killed one averagely priced led "bulb" every 2 years until i switched to a slightly more expensive brand.