The Epson EcoTank ET-2760 has an excellent supertank system. This printer uses four high-capacity ink tanks that you refill yourself. Both the black and colored tanks yield a very high amount of pages before they need to be refilled again, which makes the supertank very cost-effective, especially if you’re always printing a lot of pages.
While it’s technically possible to fill the supertank with any third-party ink, we didn’t try it and don’t recommend doing so as low-quality ink could damage the print heads and, unlike regular cartridges, can’t be removed if there’s a problem.