Wondering which one is better? Well check out this article and you’ll see that they think pigment-based inks are the best. That’s not really too big of a secret to professionals, but it’s a useful bit of information for those who might not be professionals but are still serious about their pictures. Printers that use pigment-based inks are more common than they were a few years ago, but they still aren’t the most common. The reason for that is that dye-based inks are cheaper and they produce a bigger range of colors than pigmented inks. For most people, that’s good enough. But for those who are interested in the longevity of their prints, pigment-based inks are a must. Dye-based inks are pretty much guaranteed to fade away faster than pigmented inks, but of course that also depends on which paper you use and how your photos are stored.

Pigment vs. dye inks - Which is best? [Macworld]