I mean, is it fair to compare it to the APEX? My father just bought a Plus to replace his old Shield, and while the trigger is nice, it isn't massively improved over the old Shield trigger IMO, and it's not as good as the FSS kit in my .45 M&P.
But then the Shield line just seems to have better triggers than the main M&P line as the default.
I personally like the old style trigger, especially on the SD guns. But it never hindered me on my M&Ps.