Its always a compromise. I like to have the right camera for the situation. sometimes my 5D MK III is too big and bulky, at other times, its the right one.
I also have a G1 X and would upgrade to the MK II if the price were not so high.
I was also considering the Sony RX100 MK III, but the 24-70 equivalent lens is pretty limiting for use as a all around camera.
Everything is a compromise, make a list of priorities and get the camera that comes closest. Do not compromise on focal lengths or performance. If you need 85mm equivalent, don't go for 70mm. If you want to capture a photo when you press the shutter, watch out- some are painfully slow. If you need to capture images at high shutter speeds, then expect to use high ISO. Try to get a camera that performs reasonably well at ISO 3200.