I went to high school in MA. Now, I live in Texas. I had similiar thought about Texas before I came here four years ago. You know, the western movie and the TV show the Dallas. However, Texas is very diversity since I pretty much travel all over Texas.
It has four major cities: Dallas, Houston, Austin and San Antonio.
Dallas is located in the Plain. Pretty flat. It is very metro, similiar to Atlanta. Very hip and stylish town. It is very hot between June and August, around 100F every day. But it has dry heat so it won't feel as hot. By the way, you probably see more Lexus than horse in Dallas.
Austin is my favor city in Texas. It is in what's called Hillcountry. It has very beautiful hill and Lake Travis is magic. It reminds me a lot of Northern California.
Houston is next to ocean. So it is very humid. Somewhat old industrial city. You can still see some oil drilling next to ocean. Remind me a lot of northeastern cities.
Never been to San Antonio. But I heard that it has strong military based and has a Sea World. So I probably will be there soon.
The good representative of western cowboy is probably Forth Worth and western Texas. Forth Worth is 50 miles western of Dallas and that's where most of TV show Dallas shot. Western Texas town like El Paseo has a lot more oil drilling. I think that's where older Bush made money over there.