I'm considering buying a second handgun for the first floor of my house. I have my Glock 23 upstairs, but I'd like to have one of the first floor as well. This would be for not only me, but my wife. She practiced with my G23 (using the Wolf 9mm barrel) and really like it. She did pretty well with it too. My debate is whether or not to get another G23 for downstairs or maybe a Glock 19 since she did well with the 9mm. I bought the Wolf barrel to save money on practicing, but I found some nicely priced 40 S&W factory reloads that I've used without any issues. I'm aware of the potential dangers of lead fouling in Glock barrels, so I avoid those rounds. I prefer to consolidate ammo calibers (all 40 S&W) when possible. So, taking all the above into consideration, what do you recomend? Thanks!