HEOS 5 speaker gets lots of good reviews - current price everywhere else is currently £349 ish so a saving of £150. The new HS2 speakers have support for high resolution audio and has bluetooth and is compatible with older HS1 speakers. Denon are working with Amazon to ensure Echo voice commands integrate with the HEOS system from 2017
The downside? Only available in White at this price, only available to Prime Members at the discounted price and temporarily out of stock.