Cone Inks, refillable carts for printers

Has anyone tried their system? I have an Epson 3880 and was wondering if anyone on here has tried them?

Well, I changed over to the Cone k3 inks and they look great! Comparing prints with some I have made over the past six months with Epson carts and cannot see any difference, still using the same Epson profiles. Surprised how easy it was to change over, just had to move a few chips and it worked like a charm the first time! I have already ordered a set of refillable carts and a set of the seven shade B&W inks for my Epson 2200. The 3880 makes such beautiful B&W prints that I got back to my roots, the gamut with the piezographic inks is supposed to be even better. I shoot to print!