Ben,
Thank you for question, when discussing cut accuracy there are two specifications to consider. The first, tracking, simply refers to the amount of material that is able to be sent through the cutter before the material goes off the tracks. The second and most important is repeatability,which measures the length of material that can be accurately contour cut without bleed per job.
All Summa cutters come with a repeatability guarantee and for our T-series cutters, this guarantee is 40'. What this means for you is that you can reliably cut up to 40 feet of decals without the worry of accuracy issues. To compare, our closest competitor, the Graphtec FC-8000 is able to guarantee 80 inches of repeatability.
Also, I do need to correct my previous post specifically regarding the MacSign software. The free version of MacSign (MacSign Cut) does act as a bridge application between Illustrator or Corel and Summa cutters, but only for cut vinyl decals. In order to contour cut pre-printed graphics you would need to upgrade to MacSign Lite which is $499.
Of course this only applies if you are using a Mac, WinPlot for windows does support all of the features listed above including contour cutting.
Hope that answers your questions, let me know if I can help you with anything else.
Nick Garras
Summa USA
NickG@summa.us
1-800-527-7778 x 137