Texas is REALLY BIG - so what someone thinks of Texas in the north will be very different from those in the south.
The Texas panhandle is very flat, not many trees, the wind blows, it is pretty cold in winter and they get quite a bit of snow. There are some gorgeous places though - the canyon outside of Amarillo is spectacular.
West Texas is also very flat with very few trees, but the fields of grain, corn, etc. are beautiful as are the irrigation machinery they have to help the crops grow.
South Texas is quite diverse, from El Paso to Lousiana - you have the coast, you have lots of rivers and you have some flat and some hills. Big Bend is in southwest Texas and it has beautiful mountains and looks somewhat like New Mexico.
East Texas is a forest - looks like Arkansas. It is gorgeous and very very different from west Texas.
I am in Central Texas - parts are flat, parts are hilly with lots of trees.
Also, there is a BIG difference in the cities in Texas - Austin is VERY laid back, liberal, and folksy. The city motto is "Keep Austin Wierd". Dallas and Houston are much more cosmopolitan. San Antonio is very touristy - lots of military bases also. Amarillo is very cowboyish/western.
So, you can be in Texas and depending on where you are it can be very very different from other parts of Texas!
But - come on down!