I really enjoy my 70D but wonder if the 7D would have better IQ. When I look at DxO scores for these two, it's pretty much a dead heat. Anyone out there have first-hand experience comparing the two? Thanks in advance.
That is a bit of a silly question. Comparing the 70D against the 7D is like comparing a Ferrari 458 Italia to a Brick in a race. The 70D is much better.
The 70D is a 40 megapixel camera, with almost no AA filter, compared to a 18 megapixel camera that is 4 years older. The 70D has 9% less noise and delivers images that are 15% to 20% sharper, according to back to back tests.
I have owned 3 7D bodies, and currently have a 70D body. There is no comparison between the two. The 70D is way better.
For example you'll see lenses are 10 Mpix on the 7D on DXO, on the 70D they are 12 Mpix.
The 70D also has less noise at ISO 200 than the 7D has at ISO 100 so base ISO performance is incredible.
70D = 15-20% Sharper
70D = 9% less noise at LEAST at any ISO (in many cases there is a significant difference)
70D = 50% less noise at base ISO for landscapes
70D = Way better dynamic range at high ISO (same DR at low ISO)
70D = Way better color and tone
DXO scores are about as meaningful as taking the horsepower of a car, multiplying by it's price and dividing by it's model number. They're an arbitrary choice of combining numbers that have little meaning, you need to look at the actual data.
The image quality of the 70D is much better. The only reason you buy a 7D is if you need crazy autofocus and burst speeds for sports or action or incredible weather sealing. Otherwise the 70D just obliterates it.