I have an HP Photosmart 1000 printer. The "78" (colour) and "45" (b+w) cartridges are hugely expensive, so I tried "Tescos" refilled ones.
Out of 6 refilled cartridges I've had one 45 fail to work at all, another that caused a double image of any text and a 78 with a colour missing.
I've had them replaced by customer services, so no major issues, just annoyance and inconvenience.