In 45 ACP, I prefer PMC. Blazer Brass was very dirty, and I think it actually lead fouled my Glock, despite being FMJ ball. (It was either the Blazer Brass or the UMC). Although that was 3 years ago. No problems, yet, with my current stock of PMC.
Never shot either in 9mm, but I do prefer the PMC brass in luger.
PMC Bronze 40SW is loaded pretty hot.
One additional sidenote: PMC seems to be one of the only companies that packages their 40SW ammo in a specifically sized tray, rather than the old 45-sized, one size fits all approach. That might make a difference if you were going to buy and store a case of 40SW.
I'm miffed that the ammo holder companies (MTM, Frankford, et al) aren't making boxes specifically for 40SW, yet.