Here is a good website for reviews on cameras.
http://www.dpreview.com/
Also if you google t2i vs _____ and insert another camera model there is a good comparison shows the pros and cons of each you are thinking about and stacks them up against each other.
Example:
http://snapsort.com/compare/Canon-T3..._EOS_Rebel_T2i
Make sure you get a top of the line memory card so it doesn't slow down the shutter speed.
I enjoy my T2i but wish I had a faster shutter speed and lower apperature lenses.