I should also add, just in my tiny little car and what I generally keep on my person, espeically in the winter, I tend to have probably 8-9 flashlights of some type when all said and done.
as others have pointed out, that's the real right answer, if were just gonna be honest here.
I have about 6 of the amazon 4$ amazon cree lights all floating around one place or another (I have two sitting 3 inches from me right now that I just used to tighten the cam chain tensioner of my car a little while ago, wwith a constant rotations of 16340 and 14500 being charged and restocked ready to go. I have my work lights of course, in my car I keep a nice quality LED.
I also have about 10 or so dx, countycomm, and CPF lights of all different flavors and styles that I will grab whenever I need a serious light for whaetever reason
Then I metric shit ton of the countycomm SOLeds, with about a billion replacement leds and batteries which honeslty I use probably as my second most common light both at home and work. those things are great.
Finally as others have pointed out, really nothing beats a good quality headlamp. In fact nothign even comes close to be honest.
I have a couple of The petzl tactical or or .mil or whatever they call them which are great lamps, and as someone else I think said above. There is an energivzer brand headlamp that I thenk they sell at home depot which is a 4 mode adjustable lamp that lets you choose from a dual led strobe setting, to a wide beam then all 4 LEDS and finally a Red lamp. Which quite frankly is one of hte best damn headlamps ive ever owned anywhere.
This includes the 3-400 dollar dive lamps I have had a bunch of as well at the petzl lights which require you to swap out lenses on most of their lamps if you want to go between a wide throw and anarrow white or a white to red etc. which is just annoying.