Hi Luca, the nPower one is definitely worth checking out, I have heard some people mention they got good results using that.

For OBJ export you may also want to switch to Output: Quads & Triangles when exporting from Moi.

Exporting n-gons puts more pressure on the Max importer to figure out how to triangulate the n-gon which can be a pretty difficult job to do correctly in all cases and any problems there can cause messy imports as well.

- Michael