I've had my Olight M30 for a little over a month, and found that it's an "okay" thrower, but it puts out a very nice wall of light.
I run mine on (2) AW 18500's in the short configuration, charged on the WF-139. No complaints about either.
My only, very minor gripe is that you have to cycle through strobe to go from High to Low. I like that strobe is accessible from "off" with the side button, but I don't want to cycle through it in the regular modes. Again, just a minor issue.
It's worth a buy if you're not looking for a tight hotspot 200 yards down the road. But if you need to light everything up from the bezel to about 200 feet +/-, it's for you!
FWIW, I don't regret my purchase one bit.
Flint