re: Dallas or Houston?

Been to Dallas for LSU vs. Oregon in 2011. Depends on how much time you plan on spending in the area. The stadium is nice, but other than that the outside scene was a disappointment. Concrete desert. For a short stay I can't say that Dallas is going to be that great especially if you're spending most of the time in Arlington.
I plan on going to the Houston game, and I know nothing of Reliant Stadium. So take my advice for what it's worth.