When I listen on my smartphone, I use MP3 files.
Since smartphones have limited storage, I think lightweight MP3s are the best option.
When I listen on my PC, I use FLAC or WAV files.
Since I can add as many hard drives as I want to my PC, storage isn't an issue, so I prioritize high sound quality.
To be honest, there are times when I can't tell the difference between MP3 and FLAC, but I'd still like to listen with the best possible sound quality if I can, haha.
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