Having been given an echo dot last Christmas I advise against any Amazon smart tech. Compared to Google Assistant its inanely stupid, if you don't subscribe to Amazon Music it constantly tries to get you to subscribe, and when it says it's shuffling songs by an artist it turns out shuffle means play the most popular one first, every time.
My son has tested this by asking for Florence and the machine every 10 minutes and out of 1000 times I'm not sure it's ever started with a different song.
Same hereInteresting. We were bought an Amazon Echo for Christmas, when linked our Spotify account to it and it’s never tried to get us to sign up for Amazon Music.