I live about an hour north of Houston, but my office is in San Antonio - I am there 3-4 days a week (well SA or NB or SM or Austin or Laredo), but usually SA.
I listen to KKYX for country when I am there, but usually I listen to WOAI 1200. When I want to here good Tejano, I will listen to KXTN 107.5. They play mostly old-school Tejano like Selena, Bobby Pulido, Ram Herrera and La Mafia.
I saw post 48, I could not agree more. But, I am usually home on the weekends, so I miss out on most of their really good shows. The wife and I have been there for one weekend show last summer - doors and windows open, breeze coming up off the river below - AWESOME experience!
KNBT in New Braunfels. The best station in Texas.