Why GH3? Should i get D600 instead?

the GH3 is not that much bigger. and a lot smaller than any 35mm full frame camera. Lots of other m34 models to choose from.

Compared to a GH2.

Compared to a T4i

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Alan - http://frugalfilmmakers.com/

E-M5 2xGH2 G Vario 7-14 X Vario 12-35 G 14 G Vario 14-140 Leica DG 25 Oly 45 G Vario 45-200 G Vario 100-300