ku's a good team. I think they'll wind up somewhere around 14-15 at the end of the year, which seems about right to me as I watch them and watch other top 25 teams play. They deserve to be in the Top 10 right now, because they're 8-0.
The Big XII North is definitely improved this year, but part of that is that the South isn't quite as good as it has been over the past 3 or 4 years. Kind of a "meet in the middle" type thing. I'd put the Big XII at about third among the conferences, behind the SEC and the Pac 10.