This air purifier is a bit larger than my previous version and has better functions, the first being auto sensing and control which is by far my favorite. Also, it's nice to actually get a color choice! Most of the components are washable, leaving the upkeep very easy, and the only thing you really need to do is remember to take the plastic off the inside filter piece. The noise level is pretty quiet, rather sounding like a small fan, and the blue light can be left on or turned off, so not much of a distraction... Just a nice, clean, pleasant and fresh smelling room.