Alen A350 Air Purifier

After doing a good deal of research, I purchased the A350 for our 1 bedroom apartment in NYC primarily for the dust. We've only had it for two weeks, but I couldn't be happier. The setup it very easy, it runs very quiet (we keep it on speed 2 while we're in the room, and speed 3 while we're out and asleep), and it's worked wonders on our dusty apartment. If we have people over, we can put it down to level 1 and you can't even hear it on. Level 4 does sound like it's about to take off, but we've been fine leaving it on 3. Before we used it, I had to dust every single day...literally. We are in an older building, overlooking a construction site. Now, since we've started using it, I've only had to dust once, maybe twice a week. Of course it doesn't get rid of all of the dust, but it's been so amazing that I've already ordered the tabletop Alen T100 for the bedroom. And now they ship an all white model of the A350 (no more blue front!). Definitely recommend!