When I go to DFW from Houston and back, the route I take totally depends on which side of the Metroplex I'm at, traffic, and the weather. I take a variety of paths that may or may not include I-45, 287, 360, 290, 6, I-35E, I-35W, etc.
For San Antone north bound to FW, I’ll consider 281 vs I-35...