This has turned out to be indispensable in getting our baby to sleep, and for longer periods of time. I haven't used others, or done much research, but this one works great. Compact size is useful in a one bedroom apt and for being able to help him nap on the go.
I bought this because my daughter has one ... although hers goes much louder than mine I am happy with it. Still could go louder I do not know why they limited the volume on the new ones.
I got this so I could have white noise when I travel and I love it! It's small, lightweight, easy to pack and offers different types of white noise as well as volume adjustment. Totally worth having so I don't hear hotel room doors and pipes. Thanks for a great product!