The printer that you mention uses the canon 820/21 cart that have been around for quite some time and find usage in Canon IP3600/ IP4600/ MP540/ 620/ 630/ 980 Canon IP3600/ IP4600/ MP620/ Canon IP3600/ IP4600/ ...
So like our friend pharmacist says, the best cart is the canon oem so what should do... my advise buy a few virgin carts from ebay and keep them as your standby.
but I need ARChips for the oem carts. Printer is 4 weeks old and still under warranty. If I disable the ink warning from printer I loose warranty and there is no chip resetter for mp980
Look again at the warranty clause. Warranty is not effected by disabling ink warning for sure.
The prob is you'd have to manually keep track of ink levels.
I just googled canon auto reset chip and there are a huge plethora of options, discount the chinese offers and you should be locate one that is closest to you.
What if you take your OEM empty canon cartridge, you take it the chip off, and plug it a valid autoreset chip like this one which comes with this kind of compatible cartridges http://www.inksupply.com/product-details.cfm?pn=ARC-CLI221BK ? if it works with it, it should work so fine with your empty oem one, I guess.
No need to disable ink monitoring and not concerns about warranty.
A doubt, aftermarket here means OEM but used, or just compatible?