I've got my print samples today.
Vinyl:
much better quality than HP Latex. 6p Hq is slighty better than 10p on Latex 310. 8p Hq way better. Scratch resistance, on the other hand is way lower.
Backlit:
12p is selable at most. 16 p is OK, less saturated tha my 200% HP profile but very good for most customers. I was impressed by the ink consumption: half in 16 passes then HP backlit, so it makes room for over inking in case my very picky client wants to. And one question: can you increase the saturation in the Epson RIP that comes with the printer? I curently use PrintFactory as my RIP and in profiles I make for Canon I can increase saturation by up to 20%, not the same in the caned HP profiles (I cannot make transmisive profiles). Can I find a "saturation boost" or similar in Onyx-Epson driver?
Speed:
is about the same
Drying:
I was told that backlit came out dry in 16p