I got this one for myself, to put in my bedroom as i like it cool in there when i sleep. it is great for sound quality, no fan, that part is wonderful. the water dripping is to be expected and doesn't really bother me and if that is something that would keep someone awake or even wake them up they are a much lighter sleeper then me and i can not think of one that would work for them at all then, so for quietness i would rate this very well. the reason however I'm giving it four stars is because I'm having to run it on full capacity and I'm still having some dryness issues and by morning it is out of water and no longer running. so I do not get a full night of humidification, I'm sure if I were to turn it down some i would, however even at full run as i said I'm having dryness issues with my sinuses being still dry and getting bloody noses during the night. I purchased this one as I did not want a hot water one that would make my room warmer, and the older cold ones with wicks use fans that are so loud. overall, i am satisfied with this as it has made a difference, however it needs a larger tank. I am also only using distilled water in it as the reviews suggested because I do not have good water in any way and did not want to deal with any issues, and that has made it so there have been no problems with any film anywhere and clean up is really easy, all i have to do is wipe it with a cloth once a week so far and that is it, it is totally clean.
so I'm taking one star away because even running at full capacity and only in my bedroom with the door shut, I'm still having some dryness issues and it doesn't last the full night on the tank it has.