Used mine for the first time last night, first or second setting fine for going on the flat the flat or climbing. Full beam as much as I need for descending. Was comfortable descending at 35mph on a gravelly, potholed road, not much slower than my daytime speed.
Wasn’t out for long enough to check battery life, that will have to wait for Dusk ’til Dawn.
My only niggle is that as you cycle between the settings it goes off between highest and lowest. I’d prefer it to do something like cycle through with a single click and require a long click to turn it off. Other than that very happy so far.