After the release of the A7R III this past winter and hearing the rave reviews that setup was getting, I decided to finally give the mirrorless world a serious consideration for my professional work. You'll hear complaints everywhere about the battery life for this body, and truthfully it is atrocious, but if you get yourself the Sony Vertical Grip for this setup, you'll have a more versatile setup and the battery life issue becomes almost null.As far as the quality goes, the sensor on this thing blew my Nikon completely out of the water. I now use this Sony A7R II as my primary rig, with a Nikon D7200 crop sensor as a secondary/back-up rig. If you aren't concerned about being able to shoot birds in flight or capture every moment of the action doing sports photography, then this camera is more than enough to get the job done. For my work doing portraits and real estate/architectural photography, this was a no brainer. And for about $1,200 less than the most recent iteration (A7R III), I was able to upgrade my equipment at a fraction of the cost that I had anticipated.Sony is making a lot of headway with their mirrorless bodies and this series will almost certainly continue to give Canon and Nikon a run for their money.