This camera is fantastic. The 18 MP Dual DIGIC IV sensor means the picture quality is crystal clear. The 19 AF point system is awesome and every shot you take will be in focus. The focusing system is also very fast compared to other bodies. I have taken many photos in low/very low lights.
Noise reduction is fantastic in higher ISOs. It produces 8fps in high speed shooting mode. It also has a medium speed shooting mode that produces 3fps. Photo quality is terrific. There are various Picture Styles you can choose to alter the contrast, sharpness, color tone, and saturation of the photos. At any rate, 99% of the time, colors are natural, exposure is accurate, and dynamic range is great.
Overall this is a great body in its range. You just have to remember that 7D uses a cropped sensor(1.6).