Max Format:
Curved objects have Meshsmooth applied so you can set the object resolution as you like. Just use the Named Selection Set meshsmooth to select the SubD objects. Obj Format:
In 3 different resolutions ranging from 470517 to 971267 Polygons. The lowest poly-version is the SubD. hull. So you can use it easily as SubD in Maya/XSI or any software supporting SubD. 3ds Format:
In 3 different resolutions ranging from 912099 to 1914719 Polygons. | 
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