9mm Dies

Carbide. Besides that, any die that says 9mm on it. Its not a precision cartridge(to me) so anything will work.

I have had good luck with my Dillon 9mm dies and I have at least 20k rounds on them and no complaints.

The only thing you have to decide with pistol dies is if you want to seat and crimp in one die or seat in one and crimp in another. I am a fan of separate operations as the pistol dies I have tried that seat and crimp in one die seem to not work as well as I would hope. You get the seating just right and then try to run the crimp down and your seating depth gets fucked up so you have to mess with it some more. I like to set each operation and have it be independent of the previous operation. Just my preference.
 
I have a set of Dillon 9mm dies. They are old, like 15+ years, and over 60K through them. Every now and again, I clean them, and measure what the sizing die is doing. I also run every round through a Dillon case gauge. They don't skip a beat. Dillon is a little back ordered as of the first of the year. Needed some small parts for my XL650, took about 2 months. But every other time in the last 15+ years, they have been Johnny on the spot. J