Best audiobook options

[Beagle 2]

I have tended to do the classic thing of getting audible trials when something comes up that I want to listen to and then cancelling a few months down the line because one credit a month or whatever seems like a waste of time when I want to listen to stuff as and when I want to listen to it, so I might as well just buy the things without a subscription.

I noticed that kindle unlimited has audiobooks, is that any good or are the bundled ones all kind of shitty?

Then there's the Apple Books app which is probably my favourite of the lot and seems to be cheaper on the whole than Amazon.

Any other options I should look at? A kind of Spotify for all audiobooks would be ideal, you know, something that really rips off the authors and kills the industry dead...