I have just aquired the a6000 but have not had the chance to use it much over the last 3 weeks that i have had it. From what I can see the a6300 and even the new a6500 are essentially the same camera with only detail differences that are not likely to be 'game changers' to me such as 4k video and better anti-shake...nice to have but NOT worth TWICE (a6300) and THREE TIMES (a6500) the price!
It really comes down to what you expect of your camera, what sort of shots you make, what you are going to do with the images you make and finally, what you think is a fair/OK price.....
For me personally, had I been prepared to spend the cost of an a6300 I would have moved away from Sony altogether and bought a Fuji since they are much better products, make better images and are not blighted by Sony's attitude towards it's customers, which tends towards the grasping and exploitive......little tricks to make it awkward to use non Sony accesories and poor repair policies etc etc Sony makes good sensors and image quality is good but the a6000 series/NEX are sort of the 'Ford hatchbacks' of photography in my view and best regarded as such. I do like to sometimes make large prints and have had some (from NEX 3) hung in exhibitions amd also used as large promotional images....amazing for such a small, amateur and inexpensive camera but were i to be a serious image maker again I would look for a complete system with useable lenses and value for money prices which Sony does NOT (in my view) offer.