Don’t take too seriously the reviews on Amazon. The F1 is a fine light that will last you a long time. Their customer service is top notch too. Listen to the advice being given. Don’t read too much into Amazon reviews. Use the search function of BLF to search for reviews of lights you are looking at. Use those reviews, not Amazons. Amazons are mostly full of people who haven’t the slightest idea what a LED or a LiIon battery is. They think lights are broke because they refuse to read the manual and remove the plastic tab when a battery comes installed in the light already. You will end up buying the TACLIGHT 9000 if you read Amazon reviews.