So, when I see comments such as this (from
Omaha-BeenGlockin)
I have owned a few M&P's --they all felt good in the hand and functioned reliably BUT the awful triggers never worked for ME(your experience may be different, I'm talking about me). My SD40VE has a better trigger and I'm not spending another $100 to make a M&P "right".
I think its how the M&P trigger stacks and lets off causes the nose of the gun to bounce around --the SD trigger, while heavier, is more consistent and doesn't have the stacking issues of the M&P.
I won't buy another M&P unless there is a major redesign --
my question then is: have you shot an M&P manufactured within the past year and a half? Because the company DID quite recently improve the M&P considerably. Perhaps, when the Shield was introduced and consumers questioned why its trigger was so much better than the full-size and C models, the impetus to finally improve the factory trigger was provided. Most M&P owners love the pistol, which has better ergonomics than the Glocks, but intensely resented having to install the Apex improvements at significant cost.
Anyway, allegedly, the barrel issue was fixed and accuracy is now more consistent from pistol to pistol, and the trigger has been substantially improved. My employer recently replaced our first-issue batch of M&Ps with brand-new pistols, and I couldn't be more impressed. The triggers are far better, now crisper with a much more distinct reset, and the accuracy (subjectively) seems much improved.
To answer the OP's question: with a sample size of a few hundred M&Ps, I've concluded reliability is excellent. We've had very, very few issues, all minor. Function, once you have experience with the pistol, is, well, functionally above average. Shooters of all levels of experience, from just out of the academy to many years of gun experience, typically do well with the pistol and appreciate its superior ergonomics and easy manual of arms.
I'm not a plastic pistol guy, but I have to carry one on duty and have concluded that since is the case, I prefer the M&P over any other ... uh, well, there's another story ... I recently experienced the SIG P-320, oh my ...