Well I'm late to the game but I will say the M&P 9 I have has been flawless with almost 1500 rounds through it. The trigger has smoothed out and I just can't get enough of it!
I know people say this, but those 1500 rounds have had ZERO FTEs, FTFs. I've ran wolf, Tula, ficocci, pmc, Winchester, remington and reloads through it. It just goes boom.
It's accurate, light and feels right. Made in the USA too.