Texas is a great place to live! Of course, I'm biased.
I grew up in Houston, went to school in Austin, and now I live in the Dallas area. I really like Austin. It's probably the prettiest area of the whole state. Be warned that the cost of living there is also the highest in the state. If you're coming from either coast, it won't bother you because it'll still be lower than where you are now. Austin has that great college-town feel because you've got the University of Texas right in the center of downtown Austin.
Houston is a highly cosmopolitan, very geographically dispersed city. I swear, no matter where you live in Houston, chances are good you're at least a 20 minute drive from whatever you want to do - but there's plenty to do here. The cost of living is reasonable, there are good cultural activities and sporting events, and you're close to lakes and the ocean.
One thing I can't stress enough is that Texas is HOT. Houston is Orlando-hot -- all year long. Austin isn't as sticky, but it's still pretty hot. We Texans can take the heat, but my Illinois-born DH has been in this state over 20 years, and he STILL complains about how hot it is in the summer.
I'm not sure what information you're looking for, but feel free to PM me for more details. If you know any more information -- like what area of Houston and Austin those companies are in -- that will help all of us give you more specific information. For example, I grew up in far northwest Houston, so I don't know much about the south side (near NASA).
Good luck! Texas is a great place to raise kids.