Hi,
While Sonos makes a great product, many consumers struggle with the price tag associated with the name. If you're looking for something equally robust and features above and beyond those of Sonos, sans the sticker-shock, then you might want to look at VOCO.
VOCO, per their website, is the world's first voice-controlled wireless multi-room music system. It uses an App for smartphones and tablets which allows the user to request unlimited content and stream it wirelessly throughout the home. I can stream from my Android phone, PC, Mac, iTunes, 50,000 free internet radio stations from TuneIn radio, iPod or MP3 player, or USB drive.
VOCO's V-Zone hardware receives the stream and plays audio out of equipment you already own, such as a home theater, powered speakers, or TV. Up to ten V-Zones can be added and they can be controlled individually or as a group, all using the power of your voice.
The VOCO V-Zone starts at just $249 and there are no additional components required other than the free App. There is also an all-in-one unit, I believe called the V-Spot, which includes five drivers and three amps and is due to be released in January. I saw a demo of this unit at a trade show and it sounds incredible!
In addition to being the first to introduce voice-controlled audio, VOCO plans to release voice-enabled wireless video streaming next year. I can't wait!
Great article link below.
Hope this was helpful. Good luck in your search!