I had an older model that we used when my oldest was a baby, but we lost it when we moved.  We have used a new one now, and it works just as well.  It lasts overnight as long as you dont keep it on the highest setting, looks great in any room, isn't very loud (you can hear the occasional bubbling, but nothing that anyone has complained about), and helps with allergies and nosebleeds, which my children are prone to.  Never had any problems with leaking or puddles forming. Clean with water and vinegar, and make sure to use a qtip to clean the small areas on the base.  I also like to use a straw brush.  Also, make sure clean all areas and dry well before putting it away if you are not going to be using it for a while.