KnHawke
(KnHawke)
13
Since you want compactness and longevity, yeap… 21700
Convoy S21A
Convoy M21A
Convoy L21A
You can also get empty hosts and roll your own 
Sofirn’s C8F and C8G are OKAY in my mind, but since I own a few C8F’s, I have grown to despise them as everyday lights to perch about the house… Maybe because they were so front heavy and didn’t fit right in the hand? I dunno
For Everyday Carry, I adore the S21A chassis, is even pretty good with the XHP50.2 6V