I have had the FZ7 for the past year and a half and I can say it's a very good camera, minus the noise mentioned in the previous posts. I went so far as to get a wide angle converter and a teleconverter and they worked very well too. I don't have experience with the other cams you mentioned so I can't compare, but I can give you an idea of what the FZ7 is capable of, and also what the noise looks like as there are a lot of sunrise/sunset/lower-light pics in this set:
It's a great tavel camera, very light. Hope this helps in some small way. You can also go to pbase.com and check out photos by camera.
btw, image stabilization is great!