Experienced all the above. service: average, repair cost: of the roof. courtesy: none at all. really too bad, because it seemed to have it all, straight paper throughput, color calibration, networking, only slightly annoying software for mac osx (ink replacement warnings over and over again until you really have to replace the cartridge two month later.) Option to skip the installation of extra software (not having to install 500mb of futile software is a first for hp in my experience).I think the paper detection is optical and gets misted after a while of printing and thats causing THE "paper jam error" after which you are left with a printer which can print 1,5 to 3 cm high pictures perfectly before giving THE "message" Getting to this sensor is nearly impossible.