3-group
Those machines do not make any sense! If you might need the power of 3 brewing groups with a capacity of around 120 double espresso shots per hour max, you are better off to buy a 2-group machine and in addition a one group machine. This is old fashioned German understanding of espresso shops, why: If your 3-group is out of service, you are mouse dead. If you have a 2-group and a separate 1-group, you survive. However, if you want to buy it, we sell it to you, no problem...