Hi Konni, the new v4 sub-d importer importer can make larger surfaces and also has a higher level of smoothness between surfaces.

It is meant though for importing not just any kind of .obj file, it's only meant for loading a file that has been set up for subdivision smoothing.

If you purchased MoI v3 within the last year then you will be getting a free upgrade to v4 when it is out, so I'd recommend using v4 now. You can get the v4 beta at http://moi3d.com/beta.htm .

- Michael