I've got the turquoise Photon II & use it all the time. I've got this micro screwdriver (to repair my glasses) on my key-fob, & so I can change the batteries easily. I keep a spare set at the bottom of my coat pocket in a re-seal-able tiny plastic ba...
I've used it to walk through woods, find things dropped in Movie Theatres, read things etc. I never carry a flashlight anymore cos the Photon II takes care of it. Having said that, I want an E1 Executive from SureFire which is their new 'smallest' light using one 3V DL123A battery. I used to have a few different 2AAA flashlights until I got the Photon II, and as I've got a SureFire 12PM, I know that the E1 will provide the intense white light I've come to expect. My advice is, upgrade the lamps in your Maglites or buy a better flashlight.
I heard that LED bulbs can be used in the smaller Maglites. Anyone tried it?