9 mm gun, what to get?

I am for gun rights. I like the Texas law - no permit required for good people to arm themselves. Just be careful. Unfortunately this country is polluted with lawyers waiting for you to make a mistake. Even brandishing in the wrong situation can allow the leeches to change your life dramatically for the worse.
You are young, testosterone runs high... take a good concealed weapons course and pay close attention. Type of weapon is not the most important thing.