Epson printer drivers have the annoying habit of asking if you wish to use compatibles when it detects that the inserted cartridge is not an original one. As far as I know, there is no way to turn off this message. Don't worry about it.
The print quality is no different (though some compatible inks may not be so colour fast). If you don't do much printing, compatibles might (allegedly) be more likely to cause blocked printheads, but if you do a lot of printing, the money you save is soon more than the cost of a new printer.
Mine is a C44UX and I`ve been using my old refilled cartridges for over a year, no problems, but I do a lot of printing. Some interesting answers, though. Mine arrived with cartridges when I bought it for £34. 95 in October last year.
still got problems, ive just been out and brought the correct ink for 30 quid which im pissed off at and to top it all it still not have it im that close from smashing it up . it just not charge and after its tryed it just says it dosent reconize the ink at all even tho its the correct one and theres no overide button to just carry on or anything , any ideas besides putting it through the window, is there something im doing wrong.