Update: Installed the APEX kit. Second one and I must say these are very well machined. Took it to shoot for the first time. Put 100 rounds through it. The 9 Pro I have is pretty darm accurate and I'm very happy with it. Can't say for certain yet, but using 165gr HST (our cop carry round) I was VERY impressed.
Now I say the jury is still out as I needed to make a few ajustments with the trigger. The polymer on the 40 has a few mold markings that may be causing me a little issue. Will take apart 2 nite and check it out. Nothing that is S&W QC issue as polymer molds are not CNC precision tolerances.
BUT I was getting 3 and sometimes 4 touching eachother and then a flyer. Happend a few times so there is some great promise here. This is offhand at 12 yard line so it's not like 25yards but still I was like WOW. The only other time that has happened to me was with a girl I know and her Kimber short barrel carry pistol. Same 12yard line put 5 basically into each other....you know one of those groups where you are scared to take the next shot!!! because you'll screw it up!
So, very pleased with the Pro series. For the money so far have to say, even with the expense of the Apex kits, they are worth it.