another thing: Panasonic is too eager in using their noise reduction for their high ISO shots. Here are the samples of Canon's high ISO noise, Canon's high ISO noise cleaned using a freeware, Panasonic Lumix high ISO with their auto noise reduction (can not be turned off)
Images on the extreme left and right are taken from
dpreview showing ISO 400 (or is it 800) performance of Canon vs Panasonic. The image in the middle is cleaned by myself using Imagenomic Noiseware freeware.