We've had our fair share of humidifiers. Here's how this one stacks up:

Pros: quieter than many others - very low motor noise and the "refill" gurgle isn't loud enough to wake up the four year old (more than I can say for others)

Cons: the blue light on the button is bright; we put a piece of duct tape over it so as not to disturb the sensitive child's sleep. It's also not a very sturdy base; it fell over onto my head at first set-up when the dresser it was on moved