Like others have said, not very thrilled about the 3 aaa aspect, but there are some upsides for me:
-The light is rated for 8+ hours on high, not bad from 3 aaa. Me personally I wouldn't be changing batteries often.
-In a emergency event, AA and D batteries are hard to find. Happened to us here a few years ago, big weather event, power outages, iced over roads. AAA and C cells were still available.
-My work provides all the free batteries I can use if I am using this light at work.
I really prefer buying US made products. I have a huge political agenda going on, and I am very happy to see Inova and Maglite so well represented on the shelves of brick and mortar stores.
I was hesitant about the XL100, I knew a part of that $42 price tag here was for the motion sensor. If the XL50 comes in at $25 or less, well that's a great deal at 104 lumens.
Batteries are a issue on many types of lights, so it isn't fair to dismiss the XL50 solely on battery selection. Is it ideal? no. But then again I won't buy any flashlight that runs on CR123 or anything else "exotic" (yeah I know around here there's no such thing as an exotic battery, but I like to keep to the traditional battery forms)