If you could have one camera for video, and one alone

[JazzBox]

Probably the smallest possible with MFT mount that allows me to use the old lenses I love.
Maybe a future, super-cheap Panasonic G "6+" that could have internal stabilization, 120 fps in 1080, V-Log profile and internal ProRes recording :) Maybe 2.5k, because for the moment I'm not so much involved in the 4k thing, even if I have (and love) a GH4.

But G6 is always in my pocket and in my heart ;)
 

[SleepyWill]

To me, this question is easy, it would have to be the camera that doesn't prevent me getting the shots I want. Many cameras are just to big and vulnerable to water for my style, even mirrorless and phones can be too big. Which leaves me with using a gopro black 4. Of course I would miss getting beautiful images, manual controls etc, but at least I would never have to restrict my vision!