First and foremost you must handle as many pistolas as you can. You need to find one that fits YOUR hand. After making sure the firearm is unloaded check the trigger as well to make sure you like the feel of it. My sister-n-law shoots quite a bit and really enjoys the Glock 17 the most but likes the CZ's in 9mm and 40s&w. My brother has many other 9's but those fit her best and if it doesn't fit you, you won't shoot it. You need to practice on a regular basis, so you will be able to use the firearm effectively if the time ever arises.