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Screw Drive I believe is the quietest. That is what I now have. My family has always used Sears (not sure who makes them). They have all lasted forever except for one that took a lightning hit. Anyway, I cannot imagine anything being wuiter than the screw drive unit I have. You barely hear the motor - The door itself is louder.
Hmmm Might be wrong about that. Belt might be quieter, but I cannot imagine one being quieter than what I have. Can't hear it. Either way, you should be fine.
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