These are my predictions based on what i have heard so far this year. Just as a side note, i do not know much about Region 33.
My prediction on the four bands advancing to state:
The Woodlands
Oak Ridge
North Shore
In my opinion the fourth band will be between:
Spring
College Park
Tomball Memorial
If Tomball Memorial can increase the strength of their brass i can see them possibly placing over North Shore. Currently the lack of strength/volume of their brass is what is separating them from the bands above them.
I will give an updated prediction after the UIL Region Marching Contest