I like to look at tiers:
Tier 1 - KU, KSU, ISU
Tier 2 - TCU, Texas, Baylor
Tier 3 -OSU, WVU, OU
Tier 42 - TTech
We have been here before, 2 teams with a decent chance to unseat Kansas. Not sure anyone in Tier 2 does especially after TCU lost to WVU. Your purple kittens have a small step on KU and ISU with their win at home over Boobirds. Who will hold home serve and win 5 or 6 on road? Still betting on Kansas but lets check in after next week.
Injuries and how well teams hold up with the night in, night out physicality of play is going to start to become more of a factor.