I am trying to decide between the Samsung HW-K430 and HW-M450. Between these two units, there is a difference of 100W, since the K430 has 220W and the other one has 320W. My question is the following - there is a price difference of around 60 euro between the two units. Is that extra 100W worth it? Please consider that I would never really be raising the volume too high due to neighbours. Are there other differences which are worth the extra cash?