Handling of the camera is excellent and the way better than any competitor.
Its design and built quality are simply perfect, it fits in hand ideally. Not only that it's easy shooting with various settings with a57 but it's also very pleasing.
The shutter is really quiet and smooth. The electronic first curtain shutter significantly decreases sound and vibration caused by shutter mechanism.
Articulating screen is very useful and once you get used to it's a very comfortable and necessary feature to have.
Viewfinder is more than good enough, although it's not as good as OLED EVFs we have seen in high-end SLTs but it's much better than competitor's small OVFs. Most important thing is that with EVF "what you see is what you get" unlike OVFs where you have no clue what your final image is gonna be like.
One more thing, manual focusing with traditional DSLRs is a really headache, it's almost impossible to get accurate...