i had a 7D when it first came out. Although it had all the bells and whistles, the image quality was terrible. I'm using all top notch L lenses, and no matter what, I couldn't get anything great. My rebel was far better for image quality.
I own a 7D. It is a great camera. Very good for sports. Some the 7D is almost or just as the Mark 5. It alll depends on how you use. The interface of a 7D is very similar to the Canon 5D mark II. Both are good cameras.