I just bought a Sony A6000 as an open box for $400. It is a pretty cool little camera and definitely has the quality that you would want from a full size dslr. The only real drawback I see is the kit lens, but if you want to invest in some glass down the road there are definitely options. It's small enough to be convenient which was a big plus for me when I travel. There is also the A5000 which is more in your price range and also very capable.
1/21/15 at 10:56am