My answer to this question would not be yes, but HELL, YES!
The trigger on my PC 627 UDR is absolutely top-notch, and was so right out of the box with the strain screw tight.
Regarding the discontinued PC aluminum cases, it's no loss that Smith doesn't use them anymore. They were junk. The new gray plastic PC cases are good enough for me and are, in reality, more durable. Over and above this, none of my handguns ever see the inside of their factory cases after I bring them home, anyway.