I wasn't very clear: AW is pretty much the gold standard; P14500 is the black/red protected, and lasts longer, but is close enough in output to the red IMR hi drain 14500 which doesn't last as long.
IMR are great for very LR when you need a lot of output, but like I said, i don't notice much difference in performance.
IMO AW's are worth the slight extra cost because not only are they better, they are safer.
couldn't agree more, uke!