Kai over at Digital Rev did this comparison video between the Canon 550D/T2i, the Canon 60D and the Canon 7D. Digital Rev is a still site, so most of the video deals with the still photography aspects of these three cameras. I have used all of them and I have to say that the Canon 60D looks to be the best bet for an APS-C sized sensor HDSLR on the market now. The adjustable LCD and manual audio control make it the clear choice for video work. The only reason to get a Canon 7D is if you want full HD via the HDMI output, otherwise save the dough for some killer Zeiss glass.