My new pump came today! Originally I had purchased a Mag 7 and despite many high praises from various people, I did not care for how loud it was. I think the people who don't notice it must all have enclosed sumps, which I do not. I could hear it from almost any room in my house, grumbling away. It was not the pump vibrating against anything either, as it made the noise even when suspended in a bucket. I tried everything, and at first thought it was just defective but my LFS, (standup guys, really) let me swap it for another one and it made just as much noise. So I returned it (and have been running things on a powerhead in the meantime) and have exchanged it for a Sicce 2.0 which is a 568 GPH pump. And holy crap, is it quiet! It's quieter than the rinky dink powerhead. It's only been running for a few minutes so I'll update if anything changes, but so far, definitely recommend.