I feel the reflector on the P Rocket is too small and too shallow to be the best 1 x 18650 thrower because it uses the XML. It will provide a lot of light but probably not the best thrower for a single battery light. The listing posted by davidad for the XPG Rocket claim a better throw than the XML Rocket.

That being said, I took my Shiningbeam XPG Rocket out in the backyard and tested it against my lower priced Kaidomain 5 mode C8 XML. Without the benefit of the doubt, the KD C8 outhtrow the XPG Rocket. I don't have a XML P Rocket to test my KD C8 against it, but I have little doubt the KD will out throw the XML Rocket. It is also cheaper.

The setback is the quality of the KD C8. You may have to tighten the Pill or the tail cap switch. The LED is not perfectly center although not noticable at a distant but you can see a slight imperfected beam at very close distant. The only other gripe I have about the C8 is the rough thread on the tailcap.