After buying my Canon printer MG 5350 used I first times the attached original ink cartridges from Canon. I have to admit, those beautiful, bright ducks colors as the original printer cartridges I have not get with any other no-name cartridges sets. But after this Canon original cartridges I ordered these Logic Seek cartridges from ink service and was also very pleased because the colors are good. Not so bright, luminous, like the originals, is clear. But compared to all the other vendors and their cartridges, which I had bought in between because they were cheaper, really a godsend. Now I'm no more experiments, only buy this if I need cartridges again. The mess and not keep a long time, if you do not every day print 30-40 pages. I print on / off twice a week maybe 30 pages and had about 3 weeks on the cartridges until I have to replace them. Of course, the colors are different rates even here yet. But I'm very happy with it and still save money.