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Panasonic makes the best and quietest bathroom fans. They're overbuilt and designed to handle bathroom moisture without rusting or corroding. They are engineered for 100,000 hours of continuous use, are EnergyStar rated, and have a defect rate of less than 0.0006%! I recently purchased and installed one for each of our four bathrooms (90 - 140 CFM's). Home Depot's NuTone fans are miserable by comparison. The Panasonics only cost a few buck more and are well worth it. Oh, and by the way, the noise a fan makes only masks sounds for the person inside the bathroom. People outside will still hear your "personal" noises. If you want others to not hear your bathroom business, turn up the home stereo outside the bathroom. I agree with your Hansgrohe assessment. I also remodeled a walk-in shower with an elaborate Hansgrohe setup. The best of the best!