I have Graptec and Summa, i must say that i never had any problem with my Graphtec CE5000-120, I do not recognize what people are talking about here, my Graphtec cuts perfect
But i have also made alot of research recently because im in need of a wider vinylcutter, the best on the market it Summa S2 T160, or what ever width you need.
With summa barcode you get perfect contour cutting every time, Summa S2 T series also have the highest pressure on the market, you can cut up to 600g of force.
My new summa comes on latest tuesday, but i have already tried it out on the sign and print fair it is really the best cutter availibly