I currently have a modern American made 9MM that uses 15 round magazines. I like it. It always has worked. So far I have had no problems with it. For serious work I load it with Hornady Critical defense loads. I feel that these are superior to ball ammo for defensive actions. Ball is good to practice with.
Actually, I was looking for a good .45 auto. I told a man I know about it. He had this 9MM and made me an offer that I just could not pass up. So, that's why I have a 9MM. But, if a 40 S&W or 45 Auto ever come my way, I will grab either of them and run. I just hope that ammo will be available for them soon.