My daughter can't sleep in silence, she has to have some type of sound. I've seen her using a fan or the ac just for the sound in the winter. I let her trying this sound machine and she lives it. The different variety of sounds is so awesome. So far I think her favorite it the rain sounds. One thing it doesn't use the electricity all night and it holds a charge well. It's small and she can just drop it in her bag and take were she goes. She leaving to go back to college soon so with will be easy to pack up and go.