Although I'm a huge fan of LED's, I can totally understand why you guys would stick with the incandescent bulbs. I own quite a few flashlights and all of them are LED except for one--my high power "bump in the night" nightstand light.

One application where I have been disappointed with LED is--well, I guess color rendition is as good a label as any. If I'm looking at a familiar scene or familiar objects, I have no qualms with LED. However, I have noted occasions when I have tried identifying something in the distance and just couldn't really identify what it was even though the amount of light falling on the object was sufficient. Certain colors of the object just weren't reflecting back much light and my brain just didn't recognize what it was. A few times, as an experiment, I'd go get the incandescent and every time, I would be able to make out what that mystery object in the distance was. Not a very scientific experiment, but good enough to make me change my mind. Since a bump in the night could be something unfamiliar or new, I don't want to be at a disadvantage in that situation.

I would also say that in my own experience, incandescent is generally superior to LED in fog/mist (and probably smoke, I suppose). Even with a tight beam, LED seems to produce more glare and backscatter than a similar incandescent beam.

Now that the LAPD has started issuing LED duty lights, I'm curious to hear what the verdict will be after a year of use in varied situations.