The 2007 Deluxe Edition often features a subtle but important remastering compared to the 2006 original. The stereo imaging is slightly widened, and the high-end frequencies (cymbals, backing vocal sibilance) are less harsh.

Yes. The subject line is correct. Amy Winehouse – Back to Black (Deluxe Edition, 2007) in FLAC is the definitive, superior version. Do not settle for less.