21700 battery recommendation

I have bought the VTC6A in the past, really like it but not readily available anymore. What is considered the best high discharge 21700 today that also has decent capacity? I have been looking at the MOLICEL/NPE INR-21700-P42A but I have never bought that brand. Thanks in advance.

"MOLICEL/NPE INR-21700-P42A"

That's what I bought, but I haven't used it yet.

It has some of the best stats, for my needs, for a 21700 cell.

Samsung 30 or 40T depending on your light, but the Molicell is a great cell also for cheaper. Either of those are great, the 30T can handle a lot of current.

what would be good for k1?