I have bought 3 or 4 different brands of Pro 1000 ink and LCL is consistently the best choice, not only because of the good quality but also because the service and delivery is more stable and faster than others are . I have 3 artworks that were printed over 6 months ago and still look fresh so I wouldn't worry too much about the archival quality of these inks. Any brand of pigment ink will generally last much longer than dye-based inks.