Can't speak of the south, but after last night, here is where I see the north:
Carmel is the team to beat and everyone is chasing them.
Tier 1: Carmel
Tier 2: Penn, Hamilton Southeastern, Fishers, and Carroll
Tier 3: Westfield, Elkhart, Crown Point
Tier 4: Jefferson, Warsaw, Noblesville, Zionsville, Homestead