Wow! Even Hoosierdood has jumped on the bandwagon! The bandwagon is getting filled to the brim.I just jumped on the bandwagon myself. Picked up a M&P .40 Pro Series tonight at Midwest. Traded in my beloved Glock for it too. Can't wait to take it out shooting, but man does it feel good in my hand. The Pro Series has a better trigger than the standard M&P, but I still may put in an Apex eventually.
You are right, the Pro Series trigger is greatly improved over the standard M&P trigger, but the Apex trigger is that much more again improved over the Pro Series trigger... Yea, they are that good.
The first thing I did with the M&P9 Pro and the M&P40 Pro was to add the Apex Hard Sear... And later, the RAM upgrade. Don't forget the RAM upgrade if you are used to the tactile reset of the Glock.
I actually got the M&P40 Pro trigger down to a scary 2.5lbs and had to add a double spring under the Sear to bring it back to a more sane 3.5lbs. If you know what you are doing, the sky is the limit with Apex parts.
Welcome to the club!