I've been buying my compatible inks from
here for about 5 years now with no problems whatsoever. They do have the correct chip to enable the printer to recognise them, and they send the right messages to the "ink gauges", so you can see how much you have left.
Once in a blue moon, I do get a message pops up (usually when sending a print job) which says something like "
We see that you are using non Epson cartdiges ....." - but there is a 'continue anyway' button - click that and you're away