I have used these machines for years... mostly, the Brookstone models...
what I like about this model over the Brookstone is, it has a  smaller footprint, so it takes up less room on nightstand, and most importantly, it has a better speaker.  The controls are very intuitive.   the sounds are very good, except for the ocean, it sounds rushed, not as realistic as I would have expected.   I am near the ocean nearly every day, so maybe my ears are spoiled.... had it not been for this one minor issue, this product would have got 5 stars from me.... I wish they offered 4.5 stars... [This review was collected as part of a promotion.]