Where the manuals live and what the specification tables carry.
De'Longhi states pump pressure in MPa first and bar second. Three model families state 1.5 MPa, two state 1.9 MPa, and no manual says the higher figure brews better coffee.
De'Longhi manuals carry a consolidated Technical Data block with dimensions, weight and cord length, which is more than any other brand of five publishes.
De'Longhi hosts manuals on its own document server at dls.delonghigroup.com. The URLs carry a language code and a numeric ID, and nothing else.