I have a G9 which I bought primarily for underwater use and although it took a while to find it's strong side I have done so. Keep in mind that I'm shooting some decent DSLR's and expect a lot from any camera buy. At low ISO's the G9 does very well shooting jpg's but once you pass ISO 200 the images get a bit noisy and I think the colors don't seem as vibrant. However if I shoot RAW (which isn't the same RAW our DSLR's shoot) you can get some much nicer images with a bit of time spent processing them.
It's well built, fits pockets or purses, and decent on batteries with several features many like but I think it would have been a better camera at around 8 MP. Compared to many lower priced 8 MP cameras that friends / relatives have the G9 is producing better files, and it should, but I really don't like the higher ISO's enough to use them.