This isn't about the best album, it's about which album you think best describes Dark Tranquillity as a band and as musical artists.
Originally posted by Thaumiel
The Mind's I, basically stands between Gallery (which is the album that drew most of us to the band and thus is so popular) and Projector (and afterwards). IMO if a "virgin" listener is introduced through TMI he will find it closely related to all of DTs former and later albums, something which no other album can achieve.