It's a Canon S3-IS. I had to choose between that and the Rebel XTi. Tough choice, but the 2:1 price ratio pulled me toward the S3. I'm very very happy with my choice. Honestly, I don't think there's anything that I would do with the Rebel that I couldn't do with the S3. What I mean by that is I know the capabilities of the Rebel are far superior to the S3, but I don't think I'd find myself using all that extra flexibility and it would just become more money for the same outcome.
I got the S3-IS. I can't get over how much better it is than my old Olympus C-720. It's so FAST. I used to miss so many good shots just because the camera was slow. Not anymore! Focus is great, color is great, image quality is amazing. I really couldn't ask for more.