I carry, and use at work and in the truck, 650 mAh stainless USB pass-through Joyetech eGos, with Kanger Mini ProTanks for their good BCC performance with 50/50 juice in a small, discreet form factor. For home (where the floors are carpeted or cushioned vinyl), I bought the eVic ($67.50 shipped at ValueVapors.com) for it's technology, and I use it with the bigger ProTanks, for longer vape times without being tethered to USB. There's no way, I'd "carry" an eVic/Provari sized mod or especially leave it in a 140º+ closed up truck.
But the eVic, et al, are just bigger eGos. I want to explore mechanical mods, including the world of sub-ohm micro coils. At the same time I want to make the more fulfilling dripping experience more powerful, I also want to make it much less involved. Hence, I've ordered a Reo Grand and Reomizer 2 rba. Given its 6 ml bottle and 18650 battery in a tiny form factor, with the build quality of a Provari, it may replace the eGos as my carry PV as well as the eVic as my home PV.