I bought my 70D last Spring, along with the new 10-18mm lens. It replaced my Nikon D600 and Sigma 12-24mm lens for my real estate photography. While it might sound funny that a full frame DSLR and widely-loved wide angle lens can be replaced by a crop sensor DSLR and a "cheapo" consumer zoom, it works for me and what I do because of the swiveling screen and the wi-fi. To get a good, undistorted image inside rooms the camera must often be equidistant from floor to ceiling, and you can either crouch down a bit or just use a tilt swivel LCD. I dislike sore knees. The wi-fi is great in that you can show clients the photos on a tablet quickly and easily.
I've go to say, thus far, I love the camera. The only drawback in my book is the flimsy control dial. It just feels cheap and fragile.
No focus issues here but haven't really tried to find them. I say buy it from a store you know you can return it to if you don't like it, like B&H or Adorama. Just be careful to keep all packaging and materials pristine.