I don't have a Nitecore, but 21700's are great. I use them mostly in C cell LED Maglites.
Just watch for parasitic drain. Nitecore has a bad history of atrocious parasitic cell drain in MANY of their models. Nowadays I only trust it if an independent reviewer measures it.
your batts will go for well over a year at 34 uA
That is very good, less than the battery's self discharge rate. No worries thengetting .034 ma. not sure if thats good or bad
im a odd duck i hate warm lights. i like them bluish
omg im loving this light sodarn much.