Does a vape at .20 or so differ so much from .50? I really don't get this sort of vaping.
"Is driving a 300bhp V8 so different from driving a 60hp twin? depends whether you have the throttle wide open in both cases!"
If you're using a regulated device there's not much difference as you have control over what power gets to the atomiser. The mechs have a binary throttle (full power or nothing) so getting the build right to get what YOU personally want from the vape to get the best from the single battery is the challenge (and it is a very different and satisfying experience that takes a bit of adjustment)
If you get the build wrong expect a dismal vape or a burnt lip/tongue - get it right and it's smugsville with the best flavour.
Going below 0.15 ohms for me isn't pleasurable though, too hot and very quick pulls - 0.18 to 0.25 is my personal sweet spot for the mechs I own.