after conducted autofocus adjustment I could not notice any problems with regard to the accuracy of the autofocus more. I tested with an EF-S 18-55 STM and EF 85mm USM.
I can find on a PC is no visible difference between the recorded via Live View images and choosing the middle measuring field.
Therefore, I am personally very pleased with the camera.
Before that I used an EOS 650D, the 70D I particularly like the much better (for me) image quality, better processing of housing and higher continuous shooting rate.
Too bad that others do worse experiences with your copy ...