I have four Epson printers, 895, C70, C42 and C20. They all use compatible ink from Choice Stationery and I bet you couldn't tell the difference between any of them. Unlike steve wb I have never had to do a clean when changing cartridges. The only time I have done a clean is if the printer has not been used for about 3 to 4 weeks. Now I usually run a print through them all about once a week. If you buy the Double Quad Pack from Choice, which is what I do, then the cost of each cartridges works out at £4.12 each. I sometimes also use click here which you might like to have a look at.
Since I started with the Print-Rite cartridge on my Epson Stylus Photo 790, I have not yet had to clean the heads. The colour is perhaps better than the Epson originals that I used until the guarantee period was out. I am now going to try resetting the chips and refill the cartridges myself. I would have no hesitation recommending Print-Rite and I am sure other makes will be just as good. I can say that I will not be buying Epson inks again.