CCS-Digital Reusable Ink Cartridges?

[offroad]

Does anyone have experience using the Reusable Ink Cartridges from CCS-Digital?
They seem to be very responsive to a couple of emails I have sent them.

I would be using their Reusable Epson Ink Cartridges in my Artisan 810.

Just wondered what the quality of the inks they sell was like and if the chips on these Cartridges worked well in Epson printers.

Thanks