The mix of sound quality, low energy cost, direction, size - is...

The mix of sound quality, low energy cost, direction, size - is all quite aluring and sexy.

I think the one stop shop of Phone / PCD is where the use is going to be strongest, in time.

You want that one thing to do everything, they have made huge advances in screens and camera's, so sound is next, and directional to you only probably appreciated as well, no earpiece or head phone ? - phone tracks where your ears / head are too ?