Nedd help in deciding on my first 18650's to my first flashlights (Sky Ray King + Jacob A60)

+1 (except that there are too many fake TFFs around these days..)

And for King you might want to have a good four bay charger like Nitecore Intellicharger i4 V2 (haven't used my XTAR WP2 II almost all since I got the i4.. ;)) There is also a group buy of that now: https://budgetlightforum.com/t/-/10748