My first order for EPS brand cartridges was a success but to say it has since been a failure is an understatement. The one constant with these cartridges seems to be that I keep having problems with one or the other. As the printer is used by our accounting department where they always need to print reports, my frustration has reached the point where I'm willing to pay Dell their exorbitant prices to know I can get toner cartridges working.