I use Walther's 9mm Q5 Match. Ready to go right out of the box, the Q5 is truly unique. I have never had a competition gun that I didn't need to modify until now. The trigger is 5.6 pounds and incredibly smooth with a crisp break, making it the best striker fire trigger on the market. I find the gun to be easy to handle; the lightweight slide reduces recoil and allows me to get my sight aligned quickly after firing a shot. The Q5 helps me in many ways, but its unconditional reliability truly blew me away. Even in the harshest conditions and after 10,000 rounds going through it without cleaning, it stayed consistent, reliable, and accurate.
I use PMC bronze 124gr for both training and competition. This ammo gives me a perfect power factor (135 to 138) and accuracy for minor power factor division. I use this ammo for PCC as well. I am getting 1200fps out of my 12" barrel with 4" Brekke compensator pin and welded. There is a perfect amount of gas to work the vertical compensator which makes my dot come back to zero every time. PMC bronze line is perfect for IPSC/USPSA competition. Even their 40 S&W 180gr gives me around 175 power factor which makes major power factor consistently.
For PCC division, using a reliable magazine is very important. I am running KCI USA 33rd magazines. This magazine runs very reliably even with aftermarket basepads installed. My current PCC magazine setups are 33 round mag, 43 round mag (with +10 TF basepad), and 52 rounds (Goliath +20 TF basepad). I also use their 17 round magazines on both pistol and rifle with great success. What stands out about this magazine compared to other companies' is all of their Glock magazines have metal parts on the areas where the mags typically wear out after heavy use, causing them to last longer and function more reliably.
When I shoot USPSA Production division, I use a blade tech holster with the Boss hanger. I found this combination to be the most comfortable set up for a fast and consistent draw. It is very important to me to have enough space between the holster and the belt when I draw because I use my right thumb to establish the grip before I pull the gun out of the holster. With the Boss Hanger I am able to achieve this grip every time. It's angle and height adjustments allow you to customize your set up and the adjustments hold very firmly once the screws are tightened.
If you want to reload fast and consistently, basepads are key. I am currently using their production legal basepads and 140mm +6 basepads for Carry Optics division. Both of them are running flawlessly. These basepads with the Walther PPQ magazines create the perfect angle for high-speed reloading.
I also use their Goliath magazine extension for PCC competition. I can load up to 52 rounds reliably with Kciusa Glock mags.