i have many Inks tested....and the best solution find out with NAZDAR Series.
always stable quality and perfect performance. Iam not a NAZDAR Distri but we use it for our Privat Label.
Little bit expensive but for HighQuality Ink fo me Best Choice ever
2nd. Fuji-Sericol Inks are very good choice too.
I never use again "after long term test" Triangle,Bordeaux