Hi Warren, yeah for the right project there can be a huge difference in speed. Particularly anything that has holes drilled into it can be really quite painful in subd but a snap in NURBS.

You should get a feel pretty quickly for which types of models will work the best... it's usually things that have a lot of their shape driven by 2D profile curves that are the best fit. A lot of man made objects fall into this area.

For organic shapes or things that have little localized folds and small bumpy details and things like that (like creature bodies or faces or things like that), then those are where you want to stick with sub-d.

I'll see about adding in a specific scaling factor for export to LWO as well.

- Michael