It's all the same.^^
Most popular albums are unfortunately not available on Spotify.
Also, 320K for mobile and 128K for desktop in Korea.
I think YouTube is much better now. ^^
I eventually canceled my premium account.
I'm going to sign up again when the service gets better.
In general, I also think AAC is the best quality compression format.
The quality of an mp3 file cannot be determined by the bit-rate only.
Since we can set the compression ratio, we can also convert mp3-320k files to worse quality than mp3-128k.
So mp3-320k, mp3-192k may be meaningless indications^^