Power SubD-NURBS from nPower should bring revolutionary modeling experience for 3DsMax users by merging the subdivision and nurbs technique together and so create a brand new tool for modeling. It converts SubD modeling into a NURBS-based format that can easily interface with CAD systems and CAD modeling operations. This plugin should make a bridge between these two modeling techniques and use the power to help artist and engineers by the work.
Benefits:
Neither Sub-D modeling nor NURBS modeling can effectively solve all 3-D design problems. Each has strengths and weaknesses. Sub-D modeling is great at producing and modifying complex freeform / organic shapes with smooth surfaces. NURBS modeling is good at combining shapes via. Boolean and Feature operations as well as refining shapes with operations like filleting, blending and face editing. We really see Power SubD-NURBS as a novel and powerful unification piece between these two technologies. Being able to use both modeling paradigms together in the modeling process provides huge productivity advantages.
Source and full article: nPower