that i don't know, you would think being their higher end printhead they would not (but who really knows with epson)Do smaller printheads have a higher rate of getting clogged?
here is some info on the ecotanks and where i saw the different droplet size
the last epson i bought was a 7700 and it died right on schedule (1 month after warranty expired, should have bought the extended warranty)
they also have an 'end of life' mode which kicks in when epson decides you have printed too much, and you either bring it in to the repair center or throw it away
when you set it up initially, try to do it without internet connection and then firewall it from trying to contact epson (and it will, i would not be surprised if epson hasn't added a microphone on it that listens for keywords like 'inkowl', 'cosmos', 'sublimation', etc.)