Cr123's
I had number of panasonic (red & gold) have very short life's of weeks or months,
Out of thousands - Camelion couple of weepy ones in the packet, the only failure in the field was a risco keypad melting !
Hundreds of Rapthor no issues, liked the packaging best !
I say the best quality lithium's batteries are GP,
However I suspect the best & worst could well be the same stuff made in the same factory ?