1.25" Head with best cooling effect?

[illuminate]

Hi there,

I have a 500 lumens xenon bulb and need a head, that can used with a Surefire FM33 with the best cooling effect, because the temperature is wicked.
I would prefer Solarforce .. but if others works better, please list it.

Best regards
Illuminate

[yellow]

im not completely sure, but arent the losses for the filter so high, that a real IR-light source gives better results?
(while needing much less power, getting less hot, not needing a finned head that does not work with the filter thing, ...)