After the iphone 5s, what are the best cameras on the market?

A bit of context: I recently sold my HTC one and picked up a 5s for use as my work device.

while I adored a lot about the one, I lost count of how many priceless moments with my kids I failed to capture because of the awful camera. That also sums up my experience with a plentitude of android devices since 2010.

i would like to get a second device which works well with google services and had a solid camera. size of device doesn't matter to me.

with that for context - what should I be considering? It's crossed my mind perhaps I should even get another 5s but I can't bring myself there only because of the limited number of devices which use nano sims at this point.