If you want something with great throw and output, Malkoff makes a Red-only head for the Hound dog. I'm sure you can contact them and they will ship you one with that head and either the MD3 or MD4 body (3 or 4 cell) on it for about 200 dollars. The MD4 can run on 2x 18650 for good runtime. That light will be about 2 times brighter than the mentioned Fenix, and throw a lot further too. Almost indestructible as swell.
And in case you ever decide the red is no longer for you, you can get a different head and simply swap it out and turn it into a regular light.