I have purchased several cartridges and only one has been defective, leaving marks on the document. Otherwise, this printer is amazing. The only downside is the cost. They are very expensive and had I known how costly the printer would be to operate, I might have looked at a different machine.
The refills were fine except the printer stopped working. Apparently after 3 years an internal engine part was "dirty". Laser printer kept shutting down with every print job and needed to be restarted. Did a restart but when sent another print, it errored out and shut down again. Needed to return the refills and get a new printer. I remember when printers used to last over 5+ years with heavy use (i.e. Laser III).
Easy online ordering, prompt delivery, simple installation, reliable quality, and efficient return program for replaced cartridges. Process couldn’t be better. Thanks!