150 lumens will never do it. It will seem bright at first, but as your corneas burn in you'll need 200, then 300, then 500 lumen single 18650 lights, then 1000+ lumen double and triple 18650 light. Soon you will find yourself walking around with car headlights attached to huge 80Ah lead acid car batteries.
Then, you'll start to figure out what you really like in a flashlight. You'll sell the thousands of dollars of stuff you just bought at a bit of a loss on the MarketPlace to other youngens to hook them on the flashlight crack.:duh2:
At this point it will start all over again, except you'll be buying lights that are twice as expensive made by people (rather than companies) with weird names like Data, McGizmo, Kuku and Malkoff. You'll have enough lights to get you through a nuclear winter and just as many batteries that would last twice as long, but you will think you are still undersupplied. You'll start bitching that the most perfect light in the world isn't quite good enough because it only goes down to 0.03 lumens instead of 0.005 or only last 8 days 15 hours on super low rather than your other light which lasts 8 days 22 hours (because you would ever actually run it that long when you fall down a well and wait for Lassie to go get help).
Ultimately you will spend a months income a some crazy light called a Spy007 Tri-V (isn't that something James Bond carried in Goldfinger? ) but never actually use it to it's full potential because it will have cost so much you'll be afraid to get finger prints or lint on it.
But don't worry - I'm sure you have the will power to curb your spending and be happy with your LD10 because "It's not the flashlight we own that defines us, it what we do with it." (blatant Batman line plagiarism, sorry)
******************
Hello, my name is SOYCD and I am a flashaholic! :welcome:
OMG! I have a long lost brother out there! This is like AA for flashlight guys, lol.