Given your own perfect reasoning and logic ~ I'd opine GET BOTH! If not at one go - one at a time!
I was in your same shoes a few days back... chose the Standard with an extender cap... purely b'coz I'm used to vaping with 18500 & 18650s. Five days into it I now know that I need both! Why? B'coz I find the Provari, as everyone foretold, is frugal on batteries! Thus, even an 18350 could run a distance with it as never before!
As such, it really could be handy when up-n-about... b'coz, I get it, now! It will run my day with just one (or max two) additional spare 18350s in my pocket!
Which is why - let the dust settle a bit - and I'm getting one more ~ the P-Mini this time√![]()
... and immediately putting a GP sticker on it when no one is looking. Yeah, we know how you work.