Whether you choose to subscribe to Napster, like to use Last.fm, enjoy listening to Internet radio or just want to kick back and listen to your own, personal music library, Sonos makes the whole experience just so much better. It's hard to describe if you haven't used a system like this, but being able to just lay on your bed or sofa and have all your music in the palm of your hand is, quite simply wonderful.
As has always been the case with Sonos, the sound quality is primarily dependant on the quality of your digital library. If you rip everything in a lossless format and output it digitally from a ZP90 to a high quality DAC and amplifier it should sound pretty much perfect. However, that doesn't mean that compressed music doesn't sound good if it's ripped at a reasonable bit rate. Even the amplified ZP120 produces decent sound as long as you don't skimp on the speakers.
At £799 the BU250 bundle isn't what you'd call cheap, but you are getting a lot of very good technology for that money, including one of the best wireless controllers I've ever come across. It's also worth remembering that the kind of functionality that a Sonos system gives you can only really be compared to a proper custom audio install, which would set you back far, far more. And even then, the combination of dedicated controller, iPhone app and PC desktop controller make Sonos arguably more versatile than many custom installs.
The Sonos BU250 bundle may be £100 more than last year's BU150, but it's worth it. The new controller is an absolute gem, and shows that Sonos has taken its time to produce something special rather than jumping on the touch-screen bandwagon too early. Everything that was great about a Sonos system still stands, but all those features are just easier to use with the CR200.