as soon as you put "compatible cartridges" in your printer any guarantee that you have is void!!
a common misconception. Simply isnt true.
yes he is correct, totally wrong your warranty void if compatibles used. it is only void if they can prove it was the compatible cartridge that damaged it. Epsom cartridges are only a tank with a chip to tell the printer the cartridge is new when first installed and has an id so the printer can recall how much of the cartridge was used if taken out and put back in. the printer Can remember up to 8 cartridge changes.
CIS systems are ok but the printer goes through more cleaning cycles than with individual cartridges. you also get more waste going through to the internal waste soaker, after a lot of use this can overflow due to getting clogged with dry ink.
Epsom printers are better if you use them regularly, if you leave them for to long without printing the ink especially non genuine ink drys in the print nozzles and starts to block them this is due to Epsom ( and some others) using a piezoelectric DOD system so they can only use glycol and water as a base and not alcohol or ketone's like continuous systems
i just got rid of it all and went over to colour laser, OK £250 per Toner set but thats a lot of printing and I only go through two sets a year plus an additional couple of black, the mono lasers I also use that costs £78 per toner but @ 50000 page capacity it lasts a while.
if you use laser and thinking of refilling your own toners be carefully. modern toner is a micro polymer and not good for your health.
OK now Ive really bored you.........