I'm looking for something that is small and that could be easily put in a pocket. Fairly bright but doesn't need to be a search light. I'd like to keep on hand for when I do night time photography. Would like the white light for general illumination if necessary and the red to preserve night vision if fiddling with dials on the camera. AA batteries could be ok. Or perhaps some rechargeables. I saw the Nitecore P18 and that looked interesting and price wasn't too bad. I also saw Surefire Aviator. That also seemed nice, good controls, but price was a little bit spendy. Any recommendations on these or others I should look at?? TIA