" I hate 3dsmax, but back some years ago, there were some figures floating around saying that Autodesk had about 350,000 active 3dsmax licenses, which was by far the most of any app in their software lineup, including Maya." 

The Blender website states that the current unique downloads of Blender are 366,672 per month.  Due to the fact that Blender is free not all these downloads convert to regular users but it does give an indication of its popularity.  I am a vendor here and I do use Blender for all my modelling and uv mapping needs.

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