The 7d viewfinder is significantly bigger & brighter, the multifunction controller on the 70d has a fiddle chintzy feel compared to the control wheel and joystick on the 7d and the loss of the Spot and Expansion modes. Also 7d has 3 custom settings vs 1 for the 70d. As far as the build the 7d quality advantage is obvious when you pick it up and use the controls. It is in a whole different class.
No doubt the 70 d would be better for video and live view and has some interesting electronic gadgetry like the touch screen and wifi but the 7d still has better fundamentals for picture taking and handling in the field.



