A few comments on my experiences with the A6000:
I had been using a NEX-5n with good results. I like composing with the swing-out LCD for available light informal portraits, like shooting in the dining room or the living room. I did so with legacy lenses using focus peaking. I also have the Sony 50 f/1.8 which i think is quite good.
I went to the A6000 for a more modern sensor. it's a nice step up from the NEX-5n for what I do with it. Using manual focus legacy lenses with focus peaking works very well, about the same as with the NEX-5n. Low light performance is better. Swing-out LCD is nice. The menu system is a complete change and much better than the NEX-5n. As, I think, with all EVFs, this one is fine for still subjects, no good for moving subjects.
FWIW, I am quite happy with the A6000.