The worst thing you can do is have an idea in your head what you want to buy. It's like walking into a car lot knowing you want to buy a Ford Pinto before ever driving one just because it looks cool (it doesn't).
Try different guns of different sizes, like a Glock 43, 26, 19, & 17. Then buy the 26.
j/k (well kind of)
Haha so...... Buy a Glock 26