1 Bluetooth streaming to Sonos products ain't happening; Airplay streaming requires an attached Airport Express. Not terribly missed, just sayin'.
2Bose SoundTouch Portable's battery rocks the house for just three hours at full volume, 4 1/2 if you turn it down some.
3Pure Connect's iPad app is kinda convoluted; the smartphone version is easier to navigate.
4A Samsung Shape M7 runs most reliably when steered by just one mobile phone. Trying to take over control with a second device is asking for trouble.