I have the Harman Kardon Go + Play with a friend saw and heard, and was immediately impressed. Even the well-intentioned note from him "but does not come cheap", could not stop me from buying. The reviews here I've only read was when my purchase decision has been made for a long time and have just confirmed. But I forgive only four stars because of the Go + Play with his four feet on a flat surface is not entirely correct, otherwise it would definitely five star. Everything else is already described in the other reviews.