Don't get too hung up on the specific model.
Firearms geeks will argue endlessly over whether a Model 1911 or a Glock or any number of other sidearms are the best choice, but at the end of the day there are dozens of models that are reliable and effective.
Of course you'll want something with reasonable stopping power, like a .45 or a 9mm. You'll also want something with a common enough ammunition type that you won't have difficulty getting ammunition. And you'll want something that has a pretty good history of reliability. And that's about it. Apart from that, you'll mostly want to have had enough practice to know how to use it, and how to use it safely.
Every firearm can jam. Every weapon can be negligently discharged if you aren't careful with it. Unless it's something you're really into, there's no point in arguing over tiny differences in performance. What's far more important is that you have _something_ that is reasonably effective and reliable, with the training to know how and when to use it.