Yeah, Astrolux FT03 if you’re after maximizing your budget throw. It’s a somewhat large light, though. For something the same size as the Convoy, try the Astrolux C8. Same light, but with a FET driver to maximize output (and throw). Noticeably brighter and more throw than the Convoy, but less run-time as a result.
Of those three lights, I prefer the Astrolux C8. While the FT03 is impressive, it’s just too large to be practical for easy carry.