I am not a super huge GH2 fan, because of the sensor size, lens choice and a few other little things. But I know with the new hacks it now sports a really powerful sensor.
If you have been eying the GH2 now is the time to grab one. Amazon and B&H have the GH2 with a 14-140mm marked $300 off. The offer only last until December 17th so better make your move!