the machine for the white noise, but my 4 year old enjoys all the sounds! She uses it every night and it helps to put her to sleep alot more quickly! I hope it works the same for the new baby! If it doesnt, Ill use it for myself! My husband and I love it! Best one to get! I bought this product because of the various sounds. All of the sounds are life-like and do not sound "fake". I use it when I want to take a nap or go to sleep. Just love it! Now I Can Sleep....... As a light sleeper I awaken often upon hearing noises at night. I bought a competing brands unit (at three times the price), which failed and was replaced, and then failed again. After using a Sharper Image unit that was bedside in a hotel room in New Orleans, and enjoying wonderful sleep, I went to their website and found this unit. I am very happy with the benefits and highly recommend it to aid in a good nights sleep - havent had this many dreams in decades. Smart Sleek Styling It looks good, has many different sounds, and is easy to use. Not so good! I had high expecations but was sadly disappointed. The sound was mechanical and not real. The clips of the sound repeated within a few seconds. It was distracting rather than relaxing. Best Noise is White Noise I use this product every night. Wonderful for blocking