The next time you need to ask something please use the "?" sign. I really thought you would show us a powerful light.
To answer your question, the brightest 14500 light in the world is a custom modded one. The light you have right now is in the list of the brightests 14500 lights.
Don't waste your money trying to find the brightest 14500 light, look forward in others battery types instead. Right now the 18650 cell powers MC-Es and P7s based lights, these are the brightest non-custom flashlights.