I'm currently wondering between EPSON RX300 and RX800 printers. The price of RX800 is almost double of the 300, but it seems to feature several more advanced features. I plan to use the printer to print out circa 10 images a week in A4 size, taken with Canon EOS20D, modified in Photoshop CS. I want good quality and low volume. Especially I wonder if the ink cartridges of the new models of Epson will be maintained over the years - will they be available in some years' time? What has been the longevity of ink cartrides in older Epson models?