With ammo prices so high these days you are bound to save money (or shoot more for the same money) by reloading. I load about 6000 to 8000 9mm each year with a Dillon progressive press. I only load fmj practice ammo and carry factory ammo for defensive purposes.

The 9mm is not very complicated to load. The main quirk when dealing with it is to make sure you are doing a proper taper crimp and seating to the correct depth. I use a factory cartridge with a similar bullet profile to the one I am using as a template to adjust my seating die, and always function check the first few rounds loaded before turning out a big batch.

The only problems I have had are with the soft copper plated bullets such as those by Berry and Ranier. You need to back off the crimp setting a bit with those bullets to avoid swaging a little oversize ring on the bullet just forward of the cartridge case. That ring can prevent easy chambering. This issue does not exist with true jacketed milspec bullets because the gilding metal jacket is hard and thick enough to prevent the ring from forming.

The only other problems I have ever had have been with reduced or mid-range loads that didn't have enough oomph to operate the slide...keep the loads at standard factory levels and you will have no problem.