Hi Mike,

> So, How does T-Splines and Power Sub-D NURBS compare and differ?

Well, one difference is that they are each plug-ins to different programs - T-Splines is a Rhino plug-in and Power Sub-D NURBS is a Modo plugin.

They both have conversion capabilities for converting a sub-d cage into a set of NURBS surfaces.

T-Splines also adds a variety of sub-d modeling tools to Rhino in addition to the conversion tool - I think Sub-D NURBS is only focused on the conversion part, Modo has a full set of sub-d modeling tools in it already unlike Rhino.

- Michael