Amazon Music - how does it compare???

I'm not really into streaming services, I mainly listen to ripped music, downloaded content or Internet radio stations

But lately I've been listening to Amazon Music i.e. the free stuff that comes with a Prime membership

I must admit it's definitely a big step up from Internet Radio :-)

Other than fidelity, one of the things that surprised me was the size of the image and the detail in the Venue acoustics, something that is not there with Internet Radio

But how does it compare to some of the other streaming service?

Is there any benefit to signing up for the premium Amazon Music (other than the additional content ) ?

Are there better sounding services out there?

Your input would be appreciated - Steve