The Winix 5500 is exactly as advertised- maybe even better. It is super quiet, does the job (I have two large dogs that used to stink up a room, but now I can’t smell them when they’re in the house) and it’s polite! I appreciate that the light bar turns off when low ambient light is detected. It does take a bit to register that the room is dark, but it will dim the light bar which is nice so you can leave it on while you sleep without wingback disturbed. You pretty much do not notice it is there. Great product!