I choose the T2i for the what I need it for.

I am professional photographer of over 25 years and use the Canon Mark II 5d and love it but needed a 3rd backup and decided to get rid of the 40D. I just bought the T2i and really like how small yet powerful it is. I will be using it primarily for the step and repeat photography that I do all over the country for onsite printing photography which you can see more of my work at www.proimagesphoto.com

I will post photos later next week from Vegas.