OEM is always better, although I was one of the first to try out refills. Why HP thinks they have to charge so much for it I don't understand after years of making them and having thousands and thousands sent back to them to recycle old parts into new cartridges. A double whammy for consumers I think. And the price seems to be going up, not down. And why do they always seem to leak throughout the transport mechanism before actually being ready to swap out?