I have the flash cards so It comes down to those 2. Just wondering about the video capabilities. I have poor video with sound on my ancient kodak mc3. And some of it is on the web. Is there anywhere I can see and compare video taken with the 2 above? Can you zoom as you take video? The Cannon has a time limit on its video, I think. is that just card specific? Bigger card longer video? I use linux. Do they work directly with linux? (I use the gimp for photos so I dont need camera software) Thanks for your time Brian White