@ buck-ejit:
For my imagination out of 15 years experience in this market, Summa is a market leader in switzerland (and most of the sold units are tangentials).
I have offered Roland and Summa Cutters together for a long period, but have sold perhaps 3 of the Roland-Cutters in 10 years, all GX-24, no big one. I really like the Roland printers, I have done big business with them over the years, but I don't like the cutters. If for example comparing the contour cutting functionality of both manufacturers, summa OPOS is much more enhanced.