switched to triangle a month ago. the ink dries a little slower than SS2 and the smell is a bit stronger. that said, i think it will be less troublesome in the machine as far as maintenance goes. when you clean the heads at the cleaning station, i've noticed less pronounced "cap rings" from the heads sitting on the caps for some time. also, the colors are unlike i've seen in most process color. the yellow is very yellow, not goldish. and the magenta is more of a hot pink red. the black is more dense as well. maybe i'm wrong on this one, but the inks seem to have a bit higher gloss. durability wise, same as SS2 for scratch and adhesion, very very grippy scratch resistant ink.
there's no way i'm going back to SS2. it is inferior to the triangle ink.