For those who state where PSA's quality stands, compared to other brands, I'm not sure what it is based on other than their own preconceived notions or maybe a sample of one or two. I personally seek more solid info on which to base an informed opinion. As far as the specs, materials, and quality checks on the parts go, PSA is on par with any of the other mil-spec mfg's like Colt and BCM. If I saw data where PSA parts mic'ed out at non-spec sizes or something like that compared to the others, I might be inclined to believe that they are not on par... but I have not seen anything like that. I have seen where all 3 companies occasionally turn out a defective rifle, and it would appear that all 3 are good about replacing it when this happens. As was mentioned, PSA's shipping seems to be slower than the others.
One area in which PSA is superior is that they offer a greater variety of setups, with different barrel lengths, weights, gas systems, and options for aftermarket parts. And of course their prices are much lower than the other mil-spec mfg's.