The Shield in .45acp is a potent little package. It's slimmer than the Glock 30S I usually carry, and the trigger is much better than the Glock's. When I bought it, the guy at the LGS said, "It'll be better when you put an Apex trigger in it." After only one trip to the range with it, I saw no need to "upgrade" the trigger. It's fine straight out of the box. Oh, and I got the one with the thumb safety, which to me is a plus in its favor.
Funny thing, I sold it and its holster, then two months later bought an identical pistol and holster. I can't find my photos of it...they're buried somewhere in the computer...but I carry it in a
DeSantis Mini-Scabbard. Great little holster. I have others for different guns.
You should enjoy the Shield.