Since both camera share the same sensor, they will output virtually identical image quality. The difference is primarily in the handling. The 60D has more controls, is slightly faster, and has a more sophisticated auto-focus system:
http://www.thetechnoclast.com/2011/03/03/canons-new-600d-vs-60dwhich-one-is-better/
I have a Nikon 8700 and want to upgrade. Been looking at the T3i and the 60D. Can someone shed some light on which would put me several steps ahead and the pros and cons of the T3i and 60D and if any of you have either camera, could you share your thoughts? Thanks!

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