Canon G9
As noted on a previous page, I’ve used a Canon G3 for about five years and it has served me well. The G3 is a good camera: 4 solid megapixels, 4X zoom, ISO from 50 to 400, hot shoe for external flash, some accessory lenses and filters and has a RAW capture mode. Even so, I've been pleased to update to the Canon G9.
Here are some visual comparisons of the G3 and G9. The G3 is obviously a bit larger. The normally protruding lens and hand grip makes the G3 seem even larger. Open up the articulated display panel and the G3 expands some more. However, neither are particularly large cameras. Most telling about the size: Replacing the G3 with the G9 in my Lowepro Nova Mini camera bag definitely freed up some space (promptly filled with other stuff!).