The NiteCore EZ AA R5 is a floody littly bugger, capable of handling the curent from a 3.7v li-ion 14500 cell. It's essentially a programmable single-stage twist-switch light (allowing you to easily switch from a low of about 6 lumens, to a high output of something around 165 lumens). It uses an XP-G emitter. It won't shatter any out-the-front lumen records, but it produces a really, really nice flood beam of pure, flawless snow white light. I find it excellent for illumination tasks indoors.
Another excellent pocket light is the Xeno E03, also using an XP-G emitter. This one seems to be driven a bit harder, yielding more light. It's offered with a three-stage reverse clicky, and can also handle a 14500 li-ion cell. A bonus is the availability of warm, neutral, and snow-white color temps in your choice of emitter. This light is a bit bigger, but still easily pocketable.
Finally, the new ThruNite Neutron 1A (1xAA / 1x14500 format) is a really, really nice, broad, flood beam producing pocket torch. XM-L emitter. Snow white beam tint; no off colors anywhere. More accurately, it produces a huge hotspot and generous spill beam, blending seamlessly into a very usable corona. The overall effect is a beautiful room sweeper of a pocket torch. The Neutron is the biggest of the three, although still very much remaining in the category of pocket light.
Best of luck choosing...although the community chorus will by now have voices swelling, all singing the flashaholic's mantra...GET BOTH !!! Or in this case, all three. :devil: