Just an update. Made a few parts in Autocad Inventor. SprutCAM 9 did a pretty reasonable job with it. Runs about the same as 7, the UI is nicer. It is quite a bit snappier, and hasn't crashed on me yet. It appears to make better use of the hardware graphics.

Not ready to switch just yet, but I do have some time into it at this point and I definitely like it better than SC7. May try to contact Eric tomorrow to get the 411 on Tormach support for SC9