Sonos One vs Harman Kardon Citation One - similar pricetag, IMHO Citation has better sound and I finally have that Chromecast support I was begging Sonos for! Ask if you have any
Harman Kardon Citation One (MKII) review: Bass in the place, Kardon | Expert Reviews
Harman Kardon's Citation series is a full set of Sonos-rivalling smart speakers - Wisehouse