So I'm looking to pick up a Beretta PX4 Storm and the only thing I'm hung up on is the caliber. I've owned several 9mm guns and have owned a 1911, so I've shot both calibers. I'm just curious if anyone here has a Storm in either 9mm or .45acp and what you think of it. I like the fact that you can carry more rounds with a 9mm, but I like the stopping power of the .45. If I could, I'd just get both, but unfortunately, that's not in the budget.