Of course I have to buy this to keep the printer working. that said, LOVE my HP 3000-J310 printer. It's a workhorse and I've had it a very , long time, so of course I buy the only ink that will fit in it.
This ink is very versatile. When I run out of black ink, I can still print in sepia or another accepted color. Pictures come out clear and complete. I am happy with HP inks.