Duro, much of this thread depends on what you define as an EDC?
Do you want a "real" EDC, which is truly compact and pocket sized, and is a single cell CR123/16340 battery?
Or do you want a semi-compact, and pocketable flashlight using twin/double CR123/16340's?
Or 2 mm wider in diameter is a single 18650?
A lot of people write off the single cell CR123 as being too small for them. Initially, I did this myself.
Little do they know how powerful a single cell CR123 is, and how it can truly be carried in your pocket daily!
A single 18650 is certainly more powerful, but how bulky is that in your pocket? Would you really carry this in your pocket or belt line everyday?
However, the bigger flashlights are far more powerful, and do have their place.
It all depends on what you want..
Secondly, how big do you want the head/reflector combo to be?
Sub one inch?
One inch in diameter?
Or, bigger than one inch?
Like 1.333 inches?
Or, 1.5 inches?
The bigger the reflector, the more throw you will get, but will your pocket be happy with the size?
For example, I know that a 4Sevens Quark Turbo X XM-L has a very good throw - better than the standard R5 version in fact.
However, the Turbo X also has a big 1.5 inch head - and I know many people who will refuse this size as everyday carry in their pocket.
It's like a car.
Rather than saying we want a compact sporty car - we must define if that compact sporty car will be a compact sports sedan, a compact sports hatch, or a compact sports coupe.
Thus there are different battery sizes and configurations, and different head sizes here.
We must be more specific in defining the size; then choosing the flashlight becomes much easier - it will rule out many of the candidates...