I'm really happy with my GH13 and wondering whether the GH2 offers significant improvements on the image quality? I'm not worried about the faster autofocus or the touchscreen focus (which does look nice) as I'm slowly adding to my gear bag and plan for rails and followfocus eventually along with some of the manual lenses recommended here.
At the moment I'm very pleased with the Powell settings on Vitaliys awesome hack along with a 14-45 lumix and a 0.8x adaptor on a Glidecam HD-1000, and while I haven't had much low-light work it is a possibility. But I'm also keen to know whether the GH2 is as good as the GH13 (excellent!) for running shots with detailed background?