The T2i does have some nice features, video features on par with 7D and 5DII (the T1i is the outlier). Also like the user selectable ceiling for Auto ISO (neither 7D nor 5DII have that). If you'll use the external mic hookup, that alone might be worth it.


If you can stretch to the 7D, it's a significant upgrade from the T1i - much better AF (including the ability to microadjust for specific lenses), bigger/brighter VF, faster burst rate, weather-sealing, etc.