I have noticed that some LED bulbs produce a lot of heat at their bases. When we compare LEDs to incandescent and halogen, is this heat produced in the circuit board of LEDs accounted for? I realize LEDs are loads more efficient, but was wondering if the comparisons cheat a bit, not accounting for this waste heat production. Frankly some LEDs are as hot as incandescent bulbs when I take them out. Maybe they're faulty or cheap?