I'm still using my 2200 that I got shortly after it first came out (how long ago? something like three years, I'd guess), and it's still going strong and there's no problem whatsoever with ink availability. (In general, Epson is excellent about continuing to provide ink cartridges almost forever.) The issue DarkPenguin is talking about is that on glossy papers there can be a gloss differential between low-ink and high-ink areas which is avoided with later models, but if you print on matte papers or you frame prints behind glass then it's not an issue. (Even if you print on glossy papers and don't put them behind glass, it's a relatively minor issue for many people.)
Awhile back I was thinking about replacing my 2200 with one of the newer Epsons, and did some test prints on each to compare. The difference in print quality was quite small. It was there if you looked very closely, but you had to really be searching carefully to see the difference. I ended up deciding to hang on to my 2200 and wait until it breaks or until something yet better comes out.
Boku's comment is right on. Photo-quality printers are *extremely* slow compared with office-type document printers, and the ink is much more expensive, so you *really* don't want to be using this type of photo printer for other things. Save your current document printer...