Do you gentlemen stick with one primer brand or buy whatever is on sale cause it doesn't matter?
When I started reloading for USPSA matches, I used CCI and Winchester and they have worked reliably without failure to ignite issue for me.
During the last few shortages, I bought whatever primer I could find (Fiocchi, Magtech, PMC, Tula, Wolf) in addition to CCI/Winchester but found out European metric sized SP/LP primers (Fiocchi/PMC/Tula/Wolf) were slightly larger and did not seat as reliable as CCI/Winchester primers in the Pro 1000. In fact, Magtech SP primer (made in Brazil) is the best feeding/seating primer for the Pro 1000 thus far for me. I helped set up quite a few reloaders new to Pro 1000 over the decades and their complaint of primer feed issues went away when I replaced their primers with CCI/Magtech/Winchester primers. with some 9mm once-fired and brass with tighter primer pockets like S&B/RWS, they won't allow larger primer cups to seat even to flush so now I cull them during sorting and hand prime them separately with different primers.
Recently, I bought some S&B primers and like other European metric sized primers, S&B primers did not feed as well in the Pro 1000 primer attachment to the point I am thinking about hand priming them separately. As to primer cup hardness, for me CCI/Tula/Wolf primers seem to be harder than Fiocchi/Magtech/Winchester and PMC/S&B seem to be softer. I have one lot of Tula SP primers that has failure to ignite issue due to harder primer cup but found they ignite reliably in small primer 45ACP cases so I am using them up for 45ACP target loads.
After having reloaded almost 500,000 rounds, CCI/Fiocchi/Magtech/PMC/S&B/Winchester/Wolf primers all fired consistently. BTW, I attempt to seat primers at least slightly below flush (.004"-.008") to ensure anvil tips are properly set against the priming compound for more reliable ignition.
As to performance/accuracy, I am planning to do a comparison accuracy test with different primers after I finish my thread on neck tension and bullet setback based on headstamp brass. For general purpose range practice and plinking loads, I use the cheapest primers I could buy and use larger diameter primers to extend the life of brass with looser primer pockets.
But for match shooting, especially long-range rifle loads, different brand and models of primers reportedly produce measurable difference so I would suggest using primers that produce smallest shot groups and meet velocity requirements.