When I first started out at HTF, I was alarmed at the number of people who were already into their third and fourth players--many of them because the prior machines had already failed. DVD player mortality was disconcerting. Many people reported player malfunctions after screening more than two films back-to-back--but indicated that the malfunctions would cease after turning the machine off and letting it cool. This disturbed me. I am upgrading this year--but not because my trusty Sony 550 is giving out. Rather, I need a prog-scan player because of certain other upgrades I will be making. The little 550 is headed for bedroom duty. But I'm seriously interested in how your players have held up or otherwise. Would you kindly list each player you've had and briefly describe what led to its demise? In so doing, please state how often you used the machine(s)--daily, weekly, etc., and how many hours per session. Also indicate if you kept the machine as dust-free and well-ventilated as possible. Thanks.