
I use compatibles. For my Epson r800 at Epson prices would be £120 to fill up, compatable price is just under £20!!!!!!!!!
As for quality, I use the printer for fine art prints and also the occasional photo shoot prints and, apart from needing to make slight tonal adjustments to my files (which I would need to anyway if I switched between different printers) they are great.
I also use compatable inks for my cannon printer (printing cross stitch charts ad packet fronts). I pay only £8 for a set of compatble inks compared to £75 branded or £35 tescos.
I would not go back to branded inks for desk-top printing and quality of print out is very important to me!
I have found a great supplier on eBay that guarantee the same quality prints from thier compatabl cartridges and have always delivered next day :-)