We have around 250 HP Laserjet 1320 printers in our company and while they are generally quite reliable, their age is slowly taking the toll. Each one prints 50-200 pages a week and their guts are becoming a bit loose. So number of paper jams, mispicking, and other breakings increases every month... In near future we'll be probably forced to replace them, but with what?

These were pretty cheap printers back then, aftermarket toners are dirt cheap and it is still possible to buy parts for self repairing online. Bosses won't allow the replacement to be some fancy expensive printers or cheap ones that turn to shit in months. These HPs are running for maybe ~10 years? What is the brand/model I should check nowadays? Bearing in mind we'll have to run hundreds of those? I'll appreciate any input you might have.

PS: located in EU