I have 5 M&Ps. I once had 6. I'm a one platform kind of guy too, but I'm considering getting a CZ. STIs are out of my price range. I may get a Glock someday too, but at least with CZs, I'd be shooting a hammer gun instead of a striker gun, which is different. For striker, I don't have a compelling reason to get a XDM, Glock or even a Sig. And as much as FNH supports the shooting sports, I don't have a compelling reason to get the FNS either as the M&P is as good as the other striker guns I mentioned, at least in my opinion. The M&P is what felt best in my hand when I was first looking so that is what I've committed to for now.