I have had my new tactical lights lights for a week. One is a Fenix PD20 and the other a Quark 123/2 Turbo. One has a max intensity of 180 and the other 230. Balancing out practicality and duration of the battery, I don't need to ever use the maximum intensity. I am happy with the low or medium setting with the Fenix at 3 or 9 lumens (47 at the most) and 4, 22 or 85 lumens with the Quark Turbo 123/2. What are your practical or more commonly used settings?