I have a 6th Gen Apple AirPort Extreme, a Pioneer av receiver, and I recently bought the Bose Soundtouch 20. I will be returning the Bose, because its expensive just to use the airplay function on it and it has a 5 second delay in sound when going out of pause. I have been looking at the Apple Airport Express and Apple TV for Airplay. Which device do you recommend for only airplay audio streaming? Also I will not use any of the video streaming apps on the Apple TV, because I have the Roku 3.