I'll explain a little of what i'm looking for, as well as what I am currently working with.
I just recently bought an SR-51 so throw is not a hug thing because I already have a thrower, just not in the compact size. I would like something that has good throw yet a good amount of spill so that I can still see where i'm walking in the dark. My ultimate plan for this light is for walking thick brush in the dark. So i would like something that I can pinpoint a rodent if I see it, yet still have enough light spilling over to where I wont trip on any downed trees in my immediate proximity. I would like to have a 100-200 mode that would last several hours, as well as a max mode that has a decent 1.5-3 hours or so. Battery type honestly doesnt matter because I have an abundance of all batteries. 18650s for my SR51 and have an unlimited supply of AA/AAA batteries at my disposal.
I'm going to be preordering a zebralight H600(W) when the neutral light is available so this is going to be just another light to pack in my pocket for those times of need/as a backup light. I'm becoming a flashlight whore and I'm just thinking about different situations that I may find myself in that my current lights may not work well in. Can never have too many lights for every possible situation.
Currently, my backup light is a 100lm LED Lenser and I absolutely cannot stand the fact that the light dims as the batteries get low. So i'm looking for something that is regulated so the light will not dim with power loss but just shut off.
Also, I see on goinggear.com there are many extra (drop in) options to purchase for the M20. Anyone able to elaborate on these and recommend if this light actually needs ungrades or not? Any recommendations if so?