I am immensely surprised at the quality of photos of this... considering it's a superzoom, on top of that it's a Panasonic, which did not perform that well with their previous generation (FZ40, FZ47)
A bit noisy, but brilliant color reproduction.
Amazing camera
As for working with RAW files, I've always used Lightroom, it lets you increase the efficiency of your workflow a huge amount. Much much better than say PS or Gimp.