The simple answer is there is no answer! you've spent a lot of time or cash gathering these together! The best thing you can do is sit down and choose one, get to know it inside out, the core modelling, lighting and texturing skills will transfer from one to the other.

vue and bryce aren't good for modelling,

Cinema and Max are both excellent all round packages, I prefer Max, mainly for it's material editor which I find far superior to the C4D one, but that's personal preference and I wouldn't recomend others decide on my thoughts.

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Toolset: Blender, GIMP, Indigo Render, LuxRender, TopMod, Knotplot, Ivy Gen, Plant Studio.