In reply to mickleby:
I'll elaborate because the Sony expert I know is right next me. His words...
The a6300 is not just an upgrade, it's pretty much a totally different camera. Body shape and resolution are the same, but that's about it.
The a6000 is comparable to the Nikon 3300, while the a6300 is more comparable to the nikon d500 in terms of shooting speed, video quality, continuous focus in video.
The a6000 is flimsy. The a6300 is weather sealed and sturdy. You wouldn't want the a6000 in bad weather or out on the hills.(e.g. The a6000 has a plastic lens mount!)
The a6300 has high speed filming in HD and very nice 4K footage. It's low light capabilities are far better.
The a6300 has a better viewfinder with a faster refresh rate.
The a6300 has better autofocus.
Post edited at 18:27