this is all very confusing,cheers for the dl fwd.
In a (large) nutshell:
Record Store Day vinyl 'exclusive' unreleased track = no longer so after today.
We had a few vinyl recordings surface here via kind people.
Adhouse's high quality sampling/bit rate being the best version - it was asked for with the anticipation that the song wouldn't get a digital release as it was RSD only so getting the best recording was paramount.
Less than 2 weeks later...
It was released on to Spotify & streaming sites, thus taking the shine off buying the vinyl.
Then, today, online stores were supplied with the track also.
iTunes will sell a file encoded at 256 kbps in AAC codec / M4A format (not always a popular format).
Amazon will sell a file encoded at 256 kbps (variable bit rate) in MP3 format.
Google top the list with a MP3 encoded at 320 kbps (as supplied above).
So, the 'best' quality is the Google digital version, but all 3 store versions will have the recording levels BMG intended - it's just generally accepted that the higher the bitrate the better it is.
Giving people access to the Google & Amazon versions is just for completists as they are from 'different' sources - you only really need one version.
Adhouse's FLAC vinyl rip = best analogue version to date.
Google Music = best official digital version to date.