we have use the sleep sheep since we son be 8 week old and be convince it help he fall asleep on he own . since we be go on vacation I think it would be a good idea to buy the travel version as to minimize he routine , but it turn out the travel version do not have the same sound ! we favorite be the whale sound , which be much higher pitched and truthfully very uncomfortable to listen to . 5 star for cloud b though , they return my email right away and within a week send I a new , original sound machine to replace the one in the travel sheep . thank you amazon as always for you fast shipping . as a new mom I do not know what I would have do without my amazon mom account !