Honestly I would have liked 4 MP for the S1, I like the extra cropping flexibility for making wallpapers and 4 MP is perfect for that. Other than that, it seems pretty sweet. I was just about to buy a Panasonic FZ-10k, now I'm gonna wait till some more reviews of the S1 comes out.
The Pro 1 is obviously sweet, I wonder how the Digic chip will be with the Sony ccd. Could be very nice.