I don't know if I'm this "expert" they are taliking about, but here's my 2 cents... Don't buy Lexmark inkjet printers (including the Dell made by Lexmark) as their TCO is too high - no matter how low the purchase price is. Even if you refill them yourself, you will likely still have to buy a new set of OEM cartridges every 5 - 10 refills.
. I have never owned a Lexmark, but you should have no problem refilling their cartridges as long as you follow the refill kit maker's instructions exactly. Did they give specific instructions for the exact model of cartridge that you use? Does the refill kit maker offer any indemnity as part of their warranty?
. You might also want to compare your refill instructions to the ones in this manual:
http://207.106.179.182/universalkits/refillinstructions.htm
Epson makes good printers, and clone ink tanks are cheap but they clog too easily, so those are out.
HP makes good printers and using the thermal nozzle system, they don't clog overmuch but you are pretty much stuck with the Lexmark ritual in order to really save on ink, as you will either have to refill them yourself or buy "remanufactured" carts (which are mainly just refilled by someone other than you. Some of the high-end HPs have separate ink tanks. And I don't care for the U-shaped paper path in the consumer-level printers - I have experienced paper jams on several HP models.
AFAIC, Canon is the way to go. Find one of last year's models (iP3000, 4000, 5000). A couple of sets of clone ink tanks down the road and it will have paid for itself. I have not experienced a paper jam on a Canon since the BJC-4000 ( when was that current - six or seven years ago?). I've located a small stash of new iP4000s. If interested, PM me.
.bh.