I’ve never travelled on a 444, but I’ve had lots of experience as a passenger on other Desiro variants and as such the idea of a long-distance spec, 5 carriage Desiro sounds fantastic to me, and so I admire them from afar as it were. They look like excellent trains IMO. If there was any hope of the North Transpennine route being electrified in the medium term, then I’d love to see an AC variant of the 444 operating the route, and I’ve got my fingers crossed that that is what is ordered for the Manchester-Scotland route.
On a vaguely related note, if we have to have under-floor engine DMUs on the Crosscountry route, then I wish that BR had got in with replacement stock in the early nineties, with a DEMU version of the 442 (A class 244 perhaps), so that we would never have had Voyagers foisted upon us. Five carriages (A seven carriage version would have been fun), through corridor connections, mark 3 bodyshell with sliding plug doors, the ability to be hauled by locos in the event of an emergency…It would have been bliss…