Back to the subject at hand... I also recommend trying different modeller demos if you can, but can strongly recommend Cinema 4D, primarly for it's ease-of-use interface. Of course it depends a lot on your budget... there are several free modellers out there that might fit the bill (Wings3D, Blender, Anim8or, etc.) and modellers like Silo and Hexagon in the low price range ($100ish?). Then you move up into the > $1000 modellers, which is where C4D is.

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