“ I agree about the focusing on the a77 M2. It's way more advanced than the other two. There are a lot of focus settings in the menu depending on what you're shooting. If you have them set correctly, it outshines the others.
I have tis camera and couldn't be happier. The lens selection is good enough for me. How many lenses do you use on a daily basis anyway? They have all of what I need covered and with adding the Tamron 150-600mm I'm covered from 11mm all the way to 600mm which is 900mm on APS-C. The 16-50 f/2.8 is the best zoom period! I have shot all three brands and Sony is currently way ahead in new technology at the moment. ”