what are you looking for in a cam?
Was shopping around for a long zoom prosumer a while back, other than the Olympus, which is definitely news to me, was looking for all the rest, so I can help you out a little.
I chose H2 in the end, btw - by right you should be looking at H2, if not the class of H5 is slightly higher than those you have listed since it is significantly more than 6 MGP.
In short;
1) Panasonic = good lens, good Image Stabilisation, horrible ISO performance due to overly aggressive noise reduction.
2) S3 IS = good all-rounder, in short, but slightly more expensive than usual, in my view. Also, uses FOUR AA batteries instead of Sony's 2.
3) Fuji 6500 = very close contender for me, plus points are WIDE ANGLE (28mm, wow), very DSLR feel due to the type of operation, manual zoom and all that, way better high ISO performance than most here; minus points = no image stabilisation
4) Sony = all rounder, except slightly kooky and alternative. =D