Saab as I understand it, the problem with cheap/recycled cartridges is not so much "do they work" or "give good results" as the fade resistance of the ink, especially when used in photographic printing. My other half stuck a pickie of herself and 4 colleagues, printed off on their work (Epson) printer, on the fridge door 5 years ago and it was noticeable after about a year that the colour balance was shifting towards the blue, now the only colour left in the print is blue.
Obviously if you just print documents that are only going to be relevant for a few years this is not a problem.