Not sure about the different software's Graphtec has to offer? Here is a quick explanation of the software's they offer.
Graphtec Studio - Stand-alone software; The only stand-alone software that can run Graphtec on a MAC; does not allow for SVG import
Cutting Master 4 (Included) - Plug in; works on MAC as a plug in for Adobe Illustrator or Corel Draw (not included); can open SVGs
Graphtec Pro Studio (Included) -Stand-alone software for PC only; Included with the machine; Only for PC; Can open SVGs
Pro Studio Plus ($995) - Stand alone software; Only for Windows; Can open SVG
Information from Silhouette School*