I had awful allergies in San Antonio. Every plant to the north pollinates and blows right into the heat sink of SA.
Austin has a more pleasant climate.
Come on y’all, everybody in Texas has allergies. If they don’t have any now, they will.
I’d choose on the basis of good BBQ, but I’m weird like that. If Austin or San Antone are the choices, I’d go for Bandera. Kinda between the two, and in the heart of the beautiful Hill Country.