Not sure if this is the best place to put this but here goes: last year for Christmas I purchased a Sonos wires speaker starter set for my wife. It contained two speakers. She loves them and I thought I would purchase another set for her this year. The two speaker kit goes for $378 whereas the single speakers goes for $149. Does anyone know the difference in the two speaker kit and the single speaker? I'm not sure what the advantage would be to buy the two speaker starter kit.