Being from Houston, I can tell you that UH AND Texas Tech have almost the exact same pull. It seems like houston is a black hole of some sorts. most attorneys think UH is a top 10 law school and that Texas Tech is top 20 or something. If you are in the top 15% at texas tech, I think you will do just fine finding a job in Houston. (although UH is much cheaper). I don't know about Tech, but UH is extremely competitive for some reason. People hide outlines from each other, people break into study groups really early and won't let people in, etc.
but I will tell you this: if you transfer to University of Houston, don't expect to get out of Houston. But then again, you will land a 80K job with no problem at UH, and a 6 figure job if you are top 15% there in Houston. Also, UH floods like twice a year, the law library is a joke, and the facilities are not quite what you would expect. Again, these are just my opinions and I'm trying to be helpful, but you'll never know until you go. If I were you, I would visit UH and see if you can sit in some classes or talk to some students.