Bob:
In your T3i review you comment that you doubted that Canon could claim "Full HD quality" over the full 3x to 10x zoom range.

Canon agrees, they have revised some of the wording that the camera guides you with to indicate that the HD Quality is "approximate":

http://usa.canon.com/cusa/consumer/products/cameras/slr_cameras/eos_rebel_t3i_18_55mm_is_ii_kit?pageKeyCode=prdAdvDetail&docId=0901e024802de560

They have a firmware update that addresses this, too.  It is the only thing that the firmware claims to fix!