I've downloaded WIR_Epson3rdParty2007_09_11.pdf from the Wilhelm Research site. Epson DuraBrite Ultra four-cartridge systems are compared with the following brands:
I think that test was done for PC Magazine, or one of the other popular low-end rags.
The intent was to test inks that are commonly used by the low priced refillers. I have seen folks on one board, for example, going on about how good the G&G inks are. They are also quite popular on Ebay.
The other inks you mention are less popular/populist inks, and more often used by the relatively well informed, who have to do more work to use them than buy the cheap pre-filled/refilled cartridges.
They still lack meaningful publisherd data on longevity (for the most part), though one has published a wool test rating. Another has publsihed some kind of wierd bleach test.
Lyson referred to some vague, unpublished testing when their Cave Paint inks came out a few years ago. I e-mailed them repeatedly asking for details, but never received a response. It also took some detective work to find out that their pigments also included some dyes.
Ozone tests are even harder to find. And so the story goes.
Cone in particular has made a decent effort to document longevity, gamut, and to provide ICC profiles, the big three in my mind for the non-OEM inks if they hope to compete.
Mark is doing great work - thank you! As is Wilhelm. And Ernst's experience and contribution are always welcome. Thank you folks!