Rant: Theives

lmao these make me laugh, but then also enlighten me. I didn't want to be an *** and start something so I didn't say anything till he started pissing around my house. This fall I move to Lawrence, Kansas so I will be able to buy a fire arm. What should I get, a .45 or a shotty?
I use to shoot when I lived with my aunt so I know my way around guns, just dont own one.