I was wondering if there was anyone out there who knew the Canon consumer product line fairly well. I currently own a Canon, but I want one of the tiny point and shoot cameras that look so nice and handy. I'm going to Hong Kong in 2 days, and am hoping that someone here can help me sort some things out regarding their line: QUESTION: What is the difference between the Canon SD200/300, Canon SD 10/20, and Canon S410/S500??? Other than in MP and weight, they're almost identical. The Canon S410/S500 does use a 1/1.8" sensor size, which is better than the 1/2.5" sensors used in the other 4 models I mentioned. The larger 1/1.8" may help the image quality when compared to the other 4 models, but I'm not sure by how much. DPreview doesn't offer reviews of all these models, and they don't compare Canon Ultra-compacts to other Canon Ultra-compacts. Also, the Canon SD 10/20 doesn't appear to have an optical viewfinder or zoom, so if your LCD screen goes bust, it's over. But is that it? Is that the only difference? All the cameras are nice, and I want to find something cheap, but if there's no real difference, then why do they bother? I'd grab the first camera that I find at the cheapest price if they're literally the same except for the 2 differences mentioned above. Basically, the SD200/300 and S410/S500 are the same except for small differences in MP and weight?