I already own several LED torches and I hate every single one of them, or more rather I put up with them.
Due to a degenerative disorder my eyesight is pretty picky about what I use, the ROP is almost perfect, that white colour temperature is really easy on my eyes, but the maintenance for batteries is pretty damn high, making out objects in the sunlight is difficult enough, under LED due to the shift in colour its even more difficult.
With LED I shine on the torch and look around and my brain doesn't identify with them, it makes finding objects difficult because my memory of what an object looks like is associated with the color of it aswell as the shape, so by using incandescent I'm able to more quickly identify it because it very closely or perfectly matches the daytime color temperature of the object, it also makes identifying poisonious or rash producing plants quite easy which I walk in quite often when I go walking and camping.
Thats where the mini mag comes in, I want a good low maintenance throw around torch again, not all of this bullshit of having to deal with different batteries/different chargers/torches.
I also question the value of a bright strong LED light in a combat/tactical situation, if I'm knocking someones block off I'm not going to be very useful if I'm blind in the dark when the battery suddenly cuts out or due to the lag associated with moving from a bright room to a pitch black one when your eyes need time to readjust, imagine trying to change batteries in that situation, or even just trying to find a second torch, at least NiZn+NiMH+Alkaline's slow rolloff gives you time to find the next battery, or if in an emergency find something I need quicker.
When a torch doesn't have enough flood but has a really hot spot, that too pisses me off, when in a corridor you then cannot see perps who run towards you from a side door if all you are concentrating on is the hotspot area. The WF-501B fixes that, it has plenty of flood, but the light is too damn harsh, it ruins my night vision, the Surefire G2 is even better which is what I should've bought in the first place.
When I am fatigued, incandescent doesn't give me a headache, but LED does, thats really important when you think about it, if your mind is clouded due to a headache when you are exhausted how are you going to think? Incandescent extends the time that I'm capable of making descisions, battery runtime is a non issue for me, that tiny little globe lasts for ages on 2xAA's and I carry around a replacement pair.
In saying that I believe in an atomic war occuring at some point in my lifetime. The chargers can be rather easily protected against EMP, the torches and batteries cannot, hence the move towards NiZn, NiMH and Alkaline and a move away from 18650/14500 Protected cells.
And when I'm scoping out UFO's? Everyone knows they have the power to control complex machines, but so far I've been lucky with incandescent, its always worked, when you read reports of UFO abductions they will detail how the flashlight is one of the first things to die, I might very well be the first person to field test the NiZn battery in the field in and amongst UFO's.
Enjoy LED lighting, I'm rather strangely getting out of them.