Also going along with what DBL tap said, the 115 gr +p+ are the best loads out there. They create a bigger stretch cavity when entering which is more destructive than regular loads. The stretch cavity disrupts tissue inside the body, so the faster the bullet is going, the bigger the stretch cavity, the faster the person will go down. So the 115 +p+ is the best for the 9mm, and the 147 grain isn't so great, cuz it is going much slower, and creates a smaller cavity. Still wouldn't want to get hit with the 147, but the 115 is quite nasty. The funny thing is a lot of people think the 9mm is a very weak P.O.S., but in reality is a very good one shot stopping bullet. So go for the +p+, from the stats in "Handgun Stopping Power" they stop people with just ONE SHOT 88-89% of the time. Which is better than some of the bigger bullets. And of course, you also have a bunch more of them in your magazine if you ever needed them. So if anyone out there wants to see what kind of damage your bullets will do, check that book out, "Handgun Stopping Power, the definitive study". It's not about bigger bullets, it's about speed and stretch cavities. That's why the .357 Mag is the best stopper out there, it's small enough to get going really fast and do a lot of damage.
Also MAKE SURE YOUR GUN IS RATED FOR +P OR +P+ AMMO if you are going to use it.