If you are looking for the highest quality versions (often referred to in enthusiast "papers" or guides), keep an eye out for these specific editions:
FLAC is an archival format. Once you have the FLAC files, you can transcode them into any future format without losing quality. If you start with an MP3, you are stuck with the quality loss inherent in that file forever. The "Lushness" of OK Computer: Listening to OK Computer radiohead complete studio discography flac better
(base64 encoded in comments to avoid takedown – valid for 7 days) If you are looking for the highest quality
Find the best to appreciate these lossless files. radiohead complete studio discography flac better