I’ve tried both of them, it is handy that qobuz-dl can handle artist downloads and links from text files. However, it seems to me, that although maximum quality was selected, the file size is smaller than what I got from qbdlx. Is it because it uses a more aggresive compression, or because it is lesser quality?
i think they use different size album art and more or less metadata. use mp3tag and click the red x to remove the metadata on test files not your main files and compare