I have an Arc AAA that has been around for years, never a problem.
I have a Thrunite Ti original, and the 0.04 lumen mode is useful when camping and when your eyes are dark adjusted, to be sure. The 60 lumen setting is overkill, for most situations. I am in the fewer modes is better crowd- irritates the crap out of me to toggle endlessly to reach the setting I want- which is high, 99% of the time.