After Speakerboxxx, after Big Boi Presents Got Purp?, after Sir Lucious Left Foot, it's now possible to say that Big Boi, the solo artist, has his very own aesthetic -- one pretty far removed from the ruminative Dungeon Family gutbucket soul-funk that animated the first three OutKast albums. Big Boi's sound builds on the anarchic plastic funk of Stankonia, pushing ...