Also see a lot of folks discussing focusing issues with 7D. I can't say I've noticed any more or less problems there myself. Granted it doesn't have the nuclear powered laser guided focus of a 1DX, but nothing else does. What is the general problem with it? Is it tracking action in Servo? Stills? Portraiture?
I can't speak for everyone else, but the 7D did not perform well for me with telephoto lenses (multiple versions of 7D's). It seemed to have horrendous focus consistency on earth tones such as deer, elk, bears, and brown birds. This "near miss" auto focus, when combined with inherently soft images at 100% and poor noise levels created a murky soup for me, rendering many RAW files simply unusable.
It wasn't really about the focus features being less than the 1DX, it was about clean, well-focused images even in the most unchallenging situations. I could take ten shots of a perched golden eagle with a grey cloud background, and eight would be out of focus, one so-so, and one in focus. However, cropping would be negated on the in-focus bird thanks to high noise levels and a waxy-looking AA filter. I could then point the same lens combo at someone wearing a pink shirt, and have no problem focusing. There was no consistent, repeatable pattern. Sometimes the focus was great, then, for nor reason, it was poor.
It was literally the worst wildlife camera I've ever owned. The 70D is a big improvement.
I'm not really impressed with 6,000 focus points with multi quad-sensors. Give me a strong center point focus that brings the goods most of the time, and then we'll go from there. My 7D couldn't even do that with telephotos.