my .02...
I have the G9 and love just everything about it. Great macro mode. Video is excellent--don't use the HD mode. Images are great to good as you increase ISO. 800ISO and you see alot of NR artifacts, but that's what raw is for and it is another option. Use it when you need to.
I owned the Fujifilm F30 and it and the 31 were king of P+S when it came to IQ and high ISO. For the type of shooting I do--that's key here--I prefer the G9's IS to the F30's high ISO, if you get what I mean. One other neat thing about the G9--time lapse video. Kinda fun for parties and stuff like that, but also for cloudscape video. Neat stuff.