I think it is obvious. South TX if you are from/plan to work in Houston. St. Marys if in San Antonio, and Weslayan if in Dallas/FW.
I am from Houston and STCL has a good reputation. Firms recruit from there quite a bit. But of course, main competition is from UH, UT and Baylor to an extent. Houston would recruit from St Marys before TX Weslayan. In fact, I don't think I have ever seen/meet/know someone in Houston who went to Weslayan. So if you want to go to Houston, STCL is a great choice if you did not get into UH.