Quote Originally Posted by Macca View Post
it's the exact same data in both so the idea that they are different, let alone audibly different, is far-fetched.
Absolutely correct. FLAC can be decompressed to produce a bit-identical file to the original.

Quote Originally Posted by Qwin View Post
Me to Grant, I decided early on to stick to Flac.
I don't know about the other formats, but I like the way Flac files carry the album art imbedded for thumbnails etc. and not as separate images.
WAV only holds the 'raw' audio data whereas most other audio file formats (inc MP3, FLAC) also contain metadata tags.