HI!
If you do make it to Texas you do have several options depending on what you are looking for. If you want to work in a 911 system, Med Star and Arlington are the biggest around the DFW area. I work for Arlington. We have a great working relationship with our Fire fighters. All of us are ALS providers which makes things easier. If you do not want 911, look into AMR Dallas. The pace there is less than Arlingtons and they run mostly Transfers.
If you are looking for a fast paced system then look into Arlington or Med Star..{but I do hear Med star gets their booties kicked volumn wise} Good Luck!!!!