We have several programs available for high school-age kids in our area.
What's better Babe Ruth, Colt, Sandy Koufax/Mickey Mantle and for the older kids, Connie Mack or American Legion?
Club ball seems a lot more limited in our state (AZ) once they get to high school, although there are some clubs. High school coaches are pretty involved in playing choices I'm told. Is it that way every where?
My daughter's softball seems a lot simpler.

I think it depends on where you live and the programs that are available in your area. It also depends on your son's ability, ambition, and goals - is he looking for a rec-level experience or is he interested in playing competitively in high school and perhaps in college. As parents I think we have to balance our own goals for our children with their interests and abilities.

My advice is to ask parents whose children have/are playing in various leagues or travel programs to get a feel for what's out there. Ask about players on the HS team where you son will attend - where did they play?