One thing that a lot of people don't understand about sensors: the 70D has more pixels in the same area as a 7D. Therefore, the pixel full well capacity will be the same or less, meaning the raw signal to noise will be similar.
No doubt Canon has improved the JPEG processing algorithms and processed images may have improvement over the 7D. But the Raw images, as indicated above, are only slightly better if at all - most of the improvement is due to having more pixels which means that you crop in PP or resize and eliminate some noise. Further, it is possible that the pattern of the noise is improved which means that the noise may be less objectionable. But like others, my 7D lives in point expansion mode and the additional AF modes are the reason I chose it in the first place.
This is my potential hold up. How much is actually there in improvement? Most are just saying "It's better" but no review really brings forth any solid details.
The 70D is a 60D upgrade series, 7D is a 6D upgrade series, two different series of cameras. It's like comparing a 5D III with a 1DX, they have similar parts & features, but not the same. Not saying all these camera's are not good for what they were designed to do or be attractive to the needs of the shooter.
Best wishes with your choice.
The 70D feels like the true upgrade to the 50D, with slightly less build quality.
That is an issue for me. Less build quality. I hated the 60D but if I can get something better I can deal with some problems. But where I shoot I need build quality. The tilt/rotate screen is a gimmic in my world. A gimmic I'd rather not have. And the rear dial/button/whatever they call it sucks I think. Not sure why they took their standard layout from almost every camera and changed it.
This is why the 5D MKIII or 7D MKII seems more interesting to me but have no idea. As said if I can get real world results better I'd consider it.
Garbage post, is garbage.
The 70D has nearly every feature that the 7D has, the big thing to keep the 7D interesting is the layout (up to your preference) and the different AF modes. Pretty much everything else tips in favor to the 70D.
As for the 7D to 6D... I really don't even think I need to elaborate... that's just a silly assertion.
That isn't really true. The layout is different. The build quality is way off. Some important things to many. But I think I need to just rent one and test it.
And where the heck is the update to the 7D? Canon would seemingly have a slew of new purchases if one was released as I know of many waiting on it holding onto 7Ds...