I was in your shoes about three months ago, and I wound up purchasing the t4i 2 months ago, I retuned it 2 weeks later. I took 700 shots with it and they looked good. After a lot of forum, internet, and photo-group research I purchased the 60D. I have taken about a 1000 pics (give or take) and the 60D IQ is much much better. I choose the 60D over the 7D for various reason, but the main reason for was to save the money and purchase a higher quality lens.

Back to the t4i vs the 60D... you will read reviews until you are blue in the face, but if you physically hold them side by side and see examples of pics from each, in my opinion, its a no brainier, 60D.

Good luck and let me know if you have any questions for me.