Sorry bit out of topic here but have you tried the Nitecore RCR's thanks
No, I've given up buying non-AW 16340 cells. I've tried Soshine ICRs, Kinoko IMRs and I'm done with those. I did buy an Efest IMR 16340 when I bought 4 new AW IMRs, but it's too soon to tell if the Efest is the equal of the AWs.
I would think that if you don't expect them to last 3+ years, or to handle 2A, as found on some powerful smaller lights, you'd be OK with the NiteCores.
For me, I'm done fiddling with anything but AW and then I'm basically using Andrew's IMR chemistry, so when my black ICRs are done, the lights get the IMRs.
We don't buy 16340 lights for runtime. We buy them because, for their size, they put out a lot of light, at the expense of runtime.
Carry spares, as they don't take up much room, if you use your light a lot.
Chris