i currently have a canon 20d, but this new rebel tsi sure has caught my eye. the ability to do HD video with a dslr is a cool feature. my 20d does me fine, but ive been looking around for an HD video camera as well and started thinking, would it be a step up, down, or lateral move if i sold the 20d and went for the new Tsi? double the MP (i think mines around 8, and the tsi is 15.1) not sure about FPS or iso settings as im having a hard time finding exact specs on it. that led me to ask here...thoughts?