I'm a BOA guy - I've got little experience with UIL. So I'm going to base my predictions & general thoughts mostly on how I predict BOA events & specifically SA will go.
McAllen:
Champion: Claudia Taylor Johnson
Likely finalists: Brazoswood, Westfield
Midland:
Champion: Coppell
Likely finalists: Birdville, Del Rio
Austin:
Champion: Claudia Taylor Johnson
Likely finalists: Leander, Vandegrift, Cedar Park, Cedar Ridge, James Bowie, Vista Ridge, Hendrickson, Round Rock, Winston Churchill
Dallas/Fort Worth:
Champion: Flower Mound/Hebron
Likely finalists: Keller, Cedar Park, Marcus, LD Bell, Union, Wakeland, Duncanville, Coppell
Houston:
Champion: Claudia Taylor Johnson/The Woodlands
Likely finalists: Ronald Reagan, Vandegrift, Pearland, James Bowie, Winston Churchill, Seven Lakes, Cy-Fair, Clearbook
Waco:
Champion: Cedar Park
Likely finalists: Marcus, Round Rock, North Shore, Hendrickson, Dripping Springs, James Martin, Westwood, Rouse, Keller Central
It's a state year. Recent SA champions during UIL 6A (then 5A) state years were:
2016: Flower Mound
2014: Claudia Taylor Johnson
2012: Marcus
2010: Marcus
Marcus and Flower Mound also won UIL in those years, and CTJ got the bronze in 2014. So UIL and SA results won't be *that* different.
Champion: Hebron
Here's who I see in SA finals:
The Woodlands
Marcus
Flower Mound
Ronald Reagan
Cedar Park
Claudia Taylor Johnson
Leander
Keller
Vandegrift
Round Rock
Bubble:
LD Bell*
Hendrickson
Cedar Ridge*
Vista Ridge*
James Bowie
Pearland
*Most likely choices, I think.
This is a lot and a very long first forum post so I'll stop, but I'm so excited for this band season, particularly to see how amazing bands in Texas can be this year.