A REO Grand would solve everything, but the initial cost can be overwhelming.
I use Boge 2.0 cartomizers on mine, each one lasts a week. I don't want to deal with atomizers dying on me, or having to carry a spare. A cartomizer, even when it's dropping off in performance, will still work long enough to get home to replace it, even a day or two later. Cartomizers last a long time on REOs and perform the same all the time - you squeeze the bottle through the opening and suck up to hear a gurgle (without power) and they are wet again. After a few days of doing this, you don't even think about it anymore, its a one-handed action.
This would be a no-hassle REO Grand shopping list (not including shipping):
REO Grand ($141)
(2) AW IMR 18650
batteries (about $20)
Pila Charger ($40-45)
(15) Boge 2.0 cartomizers (about $20)
Drip Tip ($2-5)
There's really no maintenance to a REO. You can clean it up with isopropyl alcohol if you want and add a dap of noalox to the firing pin (included). It's mechanical, so nothing is going to break, unless you take a hammer to the button (and it might hold up anyway).
I can't stress the difference between a Pila charger and the others available. It's like comparing a glued plastic battery box with wires exposed to a REO.
I also have a mini, and although it's also great - there is some fiddling involved with it because the 3 ml bottles are small, and the
batteries don't last as long. I am always grabbing the grand over the mini.
I know people get sick of hearing about REOs, but they are absolutely hassle-free consistent
vaping, and easier and more enjoyable than smoking, which is something I never thought I would say. I was so frustrated with the whole process until I got the grand (a little over 3 mos. ago).