Just installed it yesterday, ran it once and it's plenty quiet.  Nice features.  Wheels on the racks feel really cheap.  The side mount brackets are extremely cheap and I expect them to fail.  I don't know why they don't just integrate some substantial brackets instead of having you break and bend cheap little metal pieces that only attach by a tiny little tab.  Despite them being snugly screwed into solid wood on both sides it's barely secured, and when you open the door all the way the whole way, the unit rocks.  Frustrating that you pay so much for a supposed quality machine and they go super cheap on something so incredibly important.