Ai, now you’ve got me.
Once I had a (just 1) 26550 flashlight, and I used LiitoKala INR26650 5000mAh (Cyan).
Times have changed, though development in 26650 is/was a bit slow.
On the subject of suggestions, the best I can do is to this LINK1 and LINK2
But then there is a practical side to every theory.
What if you make up your mind. And there is nobody who ships your choice to NZ?
So maybe you should contact vapcell Dennis who’s on this forum and is known for being very forthcoming to realize his clients wishes.