olympus e-pm2 dude here again.
a6000 is probably one of the best deals you can get as far as new cameras go and you'll be familiar with the menus and junk. I mostly use mine either with that <$100 meiki 35mm or my collection of pentax lenses adapted so i'm always manually setting aperture. The focus scale works well with the meike but i never trusted it enough with adapted lenses to shoot much that way. I got a button set to zoom in on the viewfinder/screen and highlight focus turned on so manual is actually real easy under all conditions.
For me, when i'm feeling lazy aperture priority with manual ISO is the way to go. If i'm actually paying attention, i go full manual though.
summary. if you just want a tool to take street pictures that you can hit the ground running with, a6000 100% is your thing. If you want a new toy, i don't know... just get what seems sexy. Also that manual meike 35mm lens is no joke, especially at 90 bucks.
pic related: a6000 with pentax m 135mm 3.5