Help please... Canon 550D (T2i) or 60D?

Hi.I wanna get a good DSLR but i need some advice.which ones has a good video quality (cos i wanna make movie or music video that's why video is more important for me) Of course image quality is also important. please give me advice : Which one should i have to buy? Can u write differences between 550D and 60D?------- (both of them has 18-55 kit lenses)