In the past I've used incandesent bulb flashlights (LED's suck ass). And when blood gets thin, I use a propane lantern. The light off that lantern seems to reflect blood better than anything I've used to date.

I am interested it this new Gerber Carnivore light I see advertised. If it works as well as advertised, I would pay $45 for it. Saw it in Sportsmans Guide fot that price.