If you are trying to replace a Sonos, Bose, or any other speaker in that $200 range, you are probably going to be disappointed in Google Home's sound quality. But if you are trying to replace your Echo with the Home you definitely won't be disappointed... The Home is easily as good, I think better, as the Echo... Has a fuller sound with more low end.
And the best part you can create groups with Home and chromecast audio devices... I have 2 Homes and playing across both of them is way cool and sounds very nice.