One additional thing about refurbished could apply to individual units, not to a design flaw in an entire product run as above. The factory might get a failed unit back for refurbishing, but you never know if what the technicians fix is the actual cause or merely a symptom of a still undiagnosed cause. Apt used to have a "three time loser" policy - if the same unit came back from one person for service three times, they would just get a new unit. For these reasons, I would be reluctant to buy anything costly to ship or without a warranty on a refurbed basis. (Most refurbs have a warranty however, at least in the brick and mortar world.)