Even if this camera is half as good as the hype surrounding it should still be a strong card. And half the price of what Panasonic as asking would also be a nice option. Excerpt:
"The GH1 seems to have a slight but clear edge over the G1, but its sensor does seem to suffer from more banding. The
banding isn't visible in the crops above, but can be seen in the black coffee mug on the right side of the test scene, in all of the dcraw-converted images linked above. Looking at in-camera JPEGs, the banding is only slightly visible in images shot at ISO 1,600 with the normal noise reduction, but becomes more visible as the NR setting is reduced, or under lower light levels. Overall, the Nikon D5000 seems to be the best performer of the group in terms of high ISO noise, but the Panasonic GH1 does quite well for a FourThirds-sensor camera, and has video features (live autofocus during movie recording and full manual exposure control, to name two) that the other cameras lack."
Read the review here