Although I don't agree with them being overrated, you're pretty much asking for a neg by saying that though. It's your opinion, so it's not really something to catch feelings over, but even if I hated OutKast with a passion, when looking at them as a group, I can't dismiss them. They've done things that groups or duos before them haven't. Hip Hop is a genre that moves with the time, any artists that can't keep up, well we've seen what's happened to them. OutKast came in the game and told you from the jump that they wouldn't conform or be boxed in. They lived up to the name and brand they established pretty much like NWA and Public Enemy lived up to their's. It's crazy that they still managed to put out projects that people still copped and discussed 10 years after their debut. People may debate about which one is their best, them crossing over, or them alienating some of their day one base, but this is a group that told everyone from the jump that they were outcasts and didn't really care about being anything else. In a genre where artists ride trends and waves, OutKast established their own thing. You hear influences across genres from Souls of Mischief to A Tribe Called Quest to Parliament to Curtis Mayfield to Marvin Gaye to Earth, Wind & Fire. The key word is influence. Great music inspired them to create great music whether they were spitting dope 16's over crazy production or doing spoken word over crazy production or deciding to sing.