@grannyring   Agree. Roon integration is key for me as well. It will be interesting to see how all of this shakes up the streaming marketplace.
Brief early "experience / use" feedback. Might be of help to those just starting out with the service.

Those of you with Bluesound / NAD products will be sitting pretty. : )

https://www.t3.com/news/amazon-music-hd-review
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"If you want to stream music, you’ll need at least a 1.5-2Mbps LTE connection for HD quality and 5-10Mbps for Ultra HD. A large data allowance is a must too – a 3 and a half minute song eats up 51MB in HD quality and 153MB in Ultra HD. A lossy track is 9MB."

Above (posted earlier) verified from multiple outlets. [Quote is from GSMArena]