I agree with the others that we really need to know more about your intended use and budget before we can make reasonable suggestions.

FWIW, I'm quite partial to multi-level lights because they can be used at lower light levels for prolonged or close up use.

My current EDC light is an HDS EDC Ultra 85. This small light has four light levels (programmable) and can run over 300 hrs on the lowest setting, or output 85 lumens (as much as most Surefire 2 cell lights).

This light replaces my previous EDC which was a SF E2e *and* a SF L1. It simply does the job of both.

You can find a review of the HDS EDC Ultra 60 which has the same modes but slightly less output here.

I carry mine with a (slip on) SF F04 beamshaper which diffuses the beam into a flood. This allows easy use of the light as a flood light, or one with a reasonable amount of throw. The SF F05 red filter also fits fine.

-john