Yeah, I'm going to have to go with the Sac-Joaquin Section too. I am probably partial to it because I compete in it, but....
We have the top two returning vaulters in the nation who are both juniors:
16-06.00 *Ryan Shuler (Granite Bay)
16-04.00 *Scott Roth (Granite Bay)
Two fifteen-footers:
15-03.75 -Kelly McGrath (Jesuit) <--thats me!
15-00.25 -Daniel Byrne (Vacaville)
4 out of the top 10 in state returning this year make it pretty tough.
But don't let me take anything away from anyone else. The southern section is good as well with two juniors this year:
15-06.00 *Greg Woepse (Mater Dei)
15-00.00 *Miles McDowell (Murrieta Valley)
Plus you've got the two studs from San Diego Section
16-02.00 -Derek Scott (El Camino) <----#3 in the nation
15-06.00 -Scott Finley (Granite Hills)
All around, California is just a tough state this year, I've done my research

Thanks to the great site run by John Dye, Rich Gonzalez, Doug Speck.
www.dyestatcal.com
For the girls, I would definately have to say the Southern Section is the toughest.
6 of the top 10 from California are from the Southeren Section!