Best rap group of all time?

I don't think that there is any competition when it comes to the best rap group of all time, all rap groups have one particular solo artist that stands out. you can't break up outkast.

Definitely one of the best... although it's hard to say the best knowing that there were some incredible groups prior to them. Guys like Tribe Called Quest, Public Enemy, Boogie Down Productions, Wu-Tang Clan, that's just a small sample of the guys I remember growing up to. So yes, definitely ONE of the best, but maybe not quite the best... yet.

I think they are one of the best. Not THE best, but definately one of them. I love how they push the limits with every album. They don't try to copy whats popular at the time.