The Maxabeam will probably not be beaten in the near future. Physics are the main problem here.
Also, it needs to be said that Peakbeam has repeatedly upgraded the light on the inside (better reflector, better bulb, more power, better battery etc.). They just never changed the outside design much.
Here is the most similar sized farthest throwing led light: The OptoFire Searchlight | BEAMSHOTS on page 3 | record-breaking aspheric LED thrower
Here my light with maxabeam reflector: Project Excalibur - Next Generation LED Thrower (many pics) - UPDATE 2018-01-24
Both are much weaker.