Thanks R-fire! The concealment thing is big for me, so the Mini is probably the right choice. I just wanted to make sure there were no "other" advantages to the Grand. Thanks again!
I have both and IMO the Grand performs noticeably better. In particular the larger catch cup helps for the way I vape.
With a Cisco 1.5Ω atty I keep it so wet that if I put one on a mini and let it sit I can overflow the hole cup (its very small)
So my mini is a cartomizer mod for out and about ... the cup stays dry with cartos on it.
Otherwise there is always some juice in there that can dip out if you pocket it.
And the Grand hits harder than the mini ... just the limitation of the 14500 (yes I use AW IMR red batts)
I know other will disagree, but thats been my experience with owning both.
(And don't conceal it, be a proud REOnaut ... show it off)