High quality polygonal model - correctly scaled accurate representation of the original objects.
The objects and materials are logically named for ease of scene management.

No cleaning up necessary, just drop model into your scene and start rendering.
No special plugin needed to open scene.
No multi_sub object
Model have coordinate (0,0,0)
Model resolutions are optimized for polygon efficiency (in 3DS MAX the meshsmooth function can be used to increase mesh resolution if necessary