I like incandescent because it shows eye shine better when looking for animals
The tuning of LED color is an ongoing effort. Most has been towards lights that provide a good white balance. The requirement for a color that would reflect off the back of an animal's eye could have some interesting market implications. I don't know but perhaps different animals have different retina sensitivities so an LED manufacturer could customize a lamp for a particular type of hunting?
The flashlight I use most now, and keep in my pocket, came with the Leatherman. It is a single AA with 2 levels of brightness. I use a lithium AA and very seldom use the brightest output. Like a column on CCW that promoted keeping it on the bod at all times, I find a flashlight in the pocket gets put to use very often - maybe due to eyes getting weak with age or something.
The 3 AAA LED flashlights I picked up at Sam's Club are a bit bigger but are nice to have handy in various places. I have noticed how they keep coming up with new versions that have brighter LED's.
I also have a 3 AAA head lamp I picked up on a deal to play with. It comes in handy when working on things with small parts and hidden corners.
Then there's the innovation on display: the solar powered garden lights, the puck lights for closets, the over counter battery operated string lights, ... LED's have sure stimulated some creative thinking about lighting.