I've been looking at the Canon® PIXMA PRO-100 which has positive reviews but it uses Canon ChromaLife100 ink which is rated for 100 years when stored in an album. Can this be considered "archival" quality? What is a good 13"x19" that uses archival quality ink. I am planning to print on cotton, acid-free, photo rag art media.
Epson P600 is getting very good reviews. I have a P800 which uses the same inks (in larger more cost effective cartridges, which was my reason for selecting the P800 over the P600 almost as much as print size) and I can attest to excellent color saturation and black levels which will surely produce satisfactory results.
Archival stability for the Epson UltrChromeHD inks these printers use is claimed, though of course I cannot speak to personal experience on that having gotten the printer a month ago :)