John: they only clog over long periods of time or if you do not follow epsons instructions. One other anandtech'r was in one of these discussion complaining about how his heads were clogging. Come to find out he was turning off the printer thru a powerstrip. Epson is very explicit in their directions, and they online FAQ to NOT turn this printer off except thru the power button. Also, you can clean the the nozzles with amonia..it will dissolve the dried inks 🙂