I have a Canon G2, which is out of your range, but have also played with other canon cameras and have been more than satisfied.
Not sure where the bad reviews came from for the s30 , but both cnet and zdnet give it the editors choice. Read both the editorial reviews and user reviews.
I would avoid kodak.
I say, go for the s30. Get it from bestbuy or somewhere that you can return it for another if not satisfied.