Shooter48,
I have Apex parts in all my M&P guns (rifles too) with the exception of my 15-22 AR. I love how all my guns feel with the Apex parts in. With that being said, I do agree with the first reply that said that you should get used to your stock trigger before you change it.
My first gun I modified was my M&P 9c. I put about 500 rounds through it, and was quite good with it, before I changed it. I changed it because I wanted a lighter trigger pull. I am used to shooting competition 1911's and I hated how the trigger felt on the 9c. So I installed the Apex duty carry kit in it. After that was installed and I had shot it awhile, I decided that I did not like the physically feel of the stock trigger. I then changed it to the Apex polymer trigger. The darling husband (a die hard 1911 guy) liked how my 9c felt so much, he bought one and had me put the same parts in his. BTW, these guns were purchased to be carry guns.
Then I wanted a 5" Pro. I got it, and put the FSS kit in. Again, being the copy cat that he is, the darling husband did the same thing. He then one upped me and bought a C.O.R.E. which I put the FSS kit in and he put a Burris Fastfire III on and a compensated barrel in, and he is loving it.
My real AR (the VTAC II) I put an Apex compensator, that I picked up at the NRA show in Nashville, on it. It turned a very soft shooting rifle into a softer shooter.