Buy HP only. Personally I won’t buy anything else. Yes, there is plenty of other good stuff out there, but I don’t mess with it. I either buy an HP printer, or I call one of my local reps who sells multifunction copier leases. Good copier-leasing companies are getting harder to find, but I have several contacts for you - let me know when you have an need like this, and I’ll introduce you!
Duty cycle - how many pages per month will you print? Estimate and quantify – you’ll need a real number to use here.