“ Don't know for sure about 7DM2 but sony a77ii has better overall image quality as compared to 70D. I have tried 70D returned it and purchased sony a77ii. Not only the sensor but overall better response time and performance from it. apart from touch screen it is better camera than 70D. Neverthought of going SLT route but the package with a77ii ...IQ, performace ans speed feel very compelling. The so called drop in image quality due to transluscent mirror seems to be falls as the images are excellent. Also low light focusing is darn good with even mediocr 18-135 lense and excellent with 16-50mm. The only real limitation as compared to canon is Lense choice ...its enough but not that much variety as for canon. ”