I currently have a Canon S400 Digital Elph.

I am looking at the following-

Canon S3is

Sony DCH-H9(new model old model H5 I think they are similar with a bigger screen I think)

Panasonic DMC-FZ8

If you have any experence with any or all please give me your experences with them.
You you could give pros/cons.

I am going towards the Canon just the screen is the smallest out the 3(I believe 2") what do you all think?
Thank you for your help ahead of time.