I'm going to plug the Ryobi "Xenon Hi-Beam" here - if you spend your budget on hi-beams, plural, and BOGO lithium batteries, you'll probably get more bang for your buck than a Hellfighter. By a wide margin. (That doesn't change how much I want a HellFighter 5, though...)
Ryobi hi-beams offer 31.1(repeat) lumens per dollar ($40 for the light, $50 for a battery). The HellFighter offers 1.05 lumens per dollar. Neither price includes the AC charger, so that's fair. However, it would take two Ryobis to equal a HellFighter, and I hope you don't need filters...
A clever hardware hacker would hook the cheap Ryobis together and build something like the Data Bank, but HID, for less than the price of the HellFighter and thirty times more output. Alas, I don't have the budget or workshop space or machine tools to do this, because now that I've said it, I'd badly like to be the first to do
something notorious on this forum.