Amazon's HD has had an interesting effect on me. It is making me consider going back to Tidal. Or maybe Qobuz.
I have used Spotify, Deezer (briefly), Tidal, Qobuz and now Amazon HD.
Spotify has a great catalog, pretty good apps, and with Spotify Connect sounds pretty decent on my setup.
I wanted to try CD quality streaming so tried Tidal. There are lots of ways to get bit-perfect playback on my setup. It sounds great and their catalog is pretty extensive. Works with roon. Then they came along with MQA. I am morally opposed to MQA for reasons that have already been exhaustively litigated here and elsewhere. A couple of Tidal 'masters' actually sounded worse than my ripped CDs to me, but who knows the provenance.
So I tried Deezer. They don't seem very serious and don't seem to be very good programmers.
Then Qobuz came to the US. Works with roon, sounds great, can limit to 16/44.1 which is all I want. Their store is excellent. Their catalog, though. Sad.
So back to Tidal for a while. But realizing I wasn't using it that much I started having trouble justifying $20 per month. Plus they seemed to be providing only MQA for some new releases. So I turned it off again. I went on a Discogs used CD buying spree to backfill my library with stuff I had been listening to on Tidal and other streaming services.
Then Amazon. I figured what the hell, let's try the 90 day trial. Catalog is amazing. Desktop app is serviceable, Android app is OK, but can't cast to anything with quality playback. Nothing is bit-perfect. Doesn't work with roon and likely never will. Curated playlists are pretty good. Genre and artist-based "radio stations" are pretty good, too, I guess because of their deep catalog. Nice for background music. It's better than roon radio and actually works most of the time, too, unlike roon radio. But now they're pushing Atmos (WTF? almost as stupid as MQA) over soundbars and Echo speakers. So it turns out they don't seem very serious about high-quality "audiophile" music playback. Just another check box. But, the price is nice.
I'm an old geezer who values having my own library of ripped CDs/LPs and FLAC downloads that I can play anywhere anytime on anything with any software. The idea of renting music was foreign to me. I'm catching on, but mostly I use it to listen to new releases to see if it's something I want to buy, or doing stream of consciousness free association among connected bands and players and artists and genres. And for the occasional "hey remember so-and-so? that was a great singer/band/song/album etc." and being able to pull it up out of the ether and play it. (Most of the "recommended for you" selections from all these services are of little or no interest to me, or I'm already familiar with them or have them in my library.)
But for reasons stated above, it's hard to justify $20 a month for discovery and the occasional deep dive. I thought maybe Amazon's $13/month might be worth it. Not really. Especially since it isn't "audiophile" grade. Might as well use Spotify for $10/mo.
Now I'm thinking... heck, for only $7 more per month I can get bit-perfect CD quality playback, on a wide range of devices, of nearly everything ever recorded with Tidal, or a lot of it with Qobuz minus the MQA snake oil. So in effect, Amazon has made me reconsider the value of high quality streaming from a massive catalog, and set the market value at "only $7 more" for proper streaming and playback. And roon integration is a big plus. Likely an unintended consequence that Amazon wasn't aiming for.