The AW IMR *is* high drain. They are a "safe chemistry", i.e., they don't produce flames if they have a meltdown. My experience is that the high drain gives a noticably stronger
vaping experience almost until they drain to the point of not firing the atty, although I usually switch them out when they get down around 3.9v.
IMHO, definitely worth the extra cost over the regular 14500's.