The other problem with the HP and Canon is that they appear to limit you to OEM inks only and do not come with roll feeds.
Thanks for the reply.
I've had a CIS on an epson 1200 and 1280.
They have not been trouble free though. The Ink Republic system I have on the 1280 has been the most reliable (i.e.. not clogging), but I've had repeated head failures on this printer where one ink color will print in the wrong location. Replacing the heads fix the problem, but it's expensive! I believe, but cannot prove that this is due to the CIS and ink pressure issues.
I use this system to make inexpensive prints (not for sale and such) and it's saved a bit of money on routine (non photo) printing as well.
That said, 3rd party inks will not print with accurate colors without custom profiles which is something also to consider.
I just bought an Epson 3800 printer and find that it makes outstanding prints with accurate color with the provided profiles. I suspect that a 2400 will perform the same, but that the ink costs will be higher due to the tiny carts.
I guess my point is that you might want to reconsider the CIS/3rd party ink strategy as a gamble on printer longevity, fussing with messy inks/air in the CIS, and possibly sub par color compared the Epson brand inks (the print driver has been optimized for the Epson inks). I would also add the the 3800, while costing more than the 2400, comes with enough ink in it's carts to make up for the difference in price. In return, you'll get more robust printer, albeit with no roll paper feeder...
Best of luck with your decision, and printmaking.