I’m trying to think here, but I can’t think of too many.   The Sig 226 is the closest firearm that I can think of.   There are always trade offs between firearms and if you want the power of a +P 9mm with 15rds,  you really can’t beat the Beretta 92FS.   The gun has a long enough history of being proven to be reliable, and in my many years of owning a shooting them, I have never had any problems with it.   Finding used 92FS magazines is easy and there will probable be as many of them laying around 20yrs from now as there are 1911 magazines.

I have a few family members that have served in the Military and each and every one of them has mentioned that the gun is so darn big.   If you are carrying a loaded M9 pistol, and you are 5’6″  I can understand the gun is probable big for you, but do you really want to do guard duty with a Walther PPK when guarding the entrance of a base?  Having a good gun holster like Blackhawk holsters or a Galco shoulder holster might help offset weight.  I have no idea why the US Military is still afraid of putting hollow point ammunition in sidearms, but the 9mm +P does not have a good reputation.   Private contractors are a different story and it seems that the 92FS still has a good reputation with them.