I borrowed a friends gauge to measure trigger pull. It is one of the cheaper spring loaded ones, so it only gives an approximation. I used a pretty thick towel double over to hold the slide upside down in a vice. Clamped it down just hard enough to keep it from moving when pulled by the trigger gauge.
The M&P 2.0 without apex trigger was about 5.5-6lbs. I think it was closer to 6lbs.
The M&P 2.0 with apex trigger was about 4lbs. The spec sheet from apex says that it should be about 4.3lbs.
The M&P Shield 9 (gen 1) w/ factory trigger was right at 7 lbs.
The M&P Shield 40 (gen 1) w/ Hyve-Tech trigger boot was about 6.5 lbs
The Beretta 92 FS was pretty consistent around 5.75 lbs for single action, and I was unable to get a reading on double action. All I know is that it was above 8 lbs, as that was the max that the gauge would read.