In reality this can be something of derogatory statement, as much as an honest question, when asked by those who do not appreciate flashlights (say, like my wife, when the UPS guy delivers my 6th Thrunite TN4A). Nevertheless, it got me to thinking about the question, and what I've come to see as a good "battery" of flashlights. I think a persons basic flashlight needs are comfortably met by... 1) A personal edc pocket flashlight that they can easily carry in their pocket with them every day, no matter their plans or where they are going. Something in a single cell format. 2) A decent home security flashlight with a momentary on function, capable of temporarily blinding an aggressor, or identifying a threat. Something in a 2 cell format. 3) A good "all-purpose" indoor/outdoor utility light to be used for anything from power outages, to searching the property. With this one, size wouldn't be so much of a consideration, so battery type/format would be more flexible than in #1 & #2 above, but I'd want it to have the capability of a low mode with very long runtimes, a good general purpose medium, and a very bright mode for longer range outdoors. All of us know that there is a great deal of overlap, and that there are many flashlights today capable of doing a variety of tasks well, but I do think that for me at least the above battery of lights is a good balance, without becoming a "collector". I'd be interested in hearing others thoughts on the subject, if anyone wants to share their view.