I have a Cannon G10 (although the range has now been updated to include the G11 model rather than the older G10). I'm currently somewhere rather cold, rather dusty and rather hard on more or less everything, especially delicate electronic equipment.
The G10 is performing flawlessly. I'm getting a very healthy battery life from it, I love the programmable mode and you can also control Aperature and Exposure. As a first step towards more powerful cameras I couldn't reccomend this camera enough as it is robust and easy to use. It's also possibly worth noting that alot of the controls for this camera involve tirning dials on the top of the camera rather than navigating menus within the camera itself, which is something that I really really like! Oh...and the picture quality is truly breathtaking.
If I were to criticise the camera at all it would be for the fact that it 'only' has a x5 optical zoom and you have to use Cannon's own software to convert any photographs taken in RAW mode. Beyond that it's probably the best non-bike bit of kit I've ever bought.
I'm also using a KATA case to keep it safe which is a really good mid-point between a neoprene case and a heavy duty Peli Case.
Finally I've found warehouse direct to be a very good and helpful company to buy photographic equipment from, sort of like Chain Reaction...only for cameras, and based in Norwich.
No idea when I'll be online again so all the best and hope you find the camera you're looking for!