I prefer to get the actual cd of any album & rip to flac & convert to other formats, but in this case, I can only find this album in digital form. It is available in both itunes, & on amazon. which would offer the best sound quality? I know they are both in a lossy format, is there a big difference? itunes has it in .ma4 or some sort of format, & amazon has it in mp3 320kbps.