I've worked on bunches of printers and the Epson's inkjets are present all too often on the workbench. When they work they produce great results but when they don't typical users just can't recover as well. ALL inkjets sooner or later have a clogging or poor output product and clean cycles and direct cleaning is about the only solution. For many printers other than Epson, replacing the inkcart replaces the inkjets as well. On Epson, the inkjet remain as a separate unit with separate inkwells. This procedure is the crux of the product as the inkjets remain, they're prone to ink clogs, etc.. Canon seems to make the best compromise of inkjets and inkwell(carts). If your business needs it, go with Epson, you can afford the hassle, if not then get a Canon. Of course if you have deep pockets, go Epson otherwise Canon. Or just chuck it all and get a hi-end HP.
I've been deciding on purchasing the canon i9900 because of the large format and 8 ink tanks. The red and green I heard really made the prints on this printer stand out. But I've been doing some reading and it sounds like the ink used for this printer is prone to fading. I started looking into the Epson 1800 because they use picgment based rather than dye inks. The color range does not seem as wide even though it has 8 ink tanks- 1 is a gloss and two are blacks. I've also read, on CNet and elsewhere that the print heads can clog a lot more than canon's, and you have to send it them if it needs to be replaces whereas canon will mail you a new one. Does anyone have experience with either and can give me any advice- I can't make up my mind! Thanks.