GUNS & AMMO
The LC9 is a lot smaller than the m&p, and 9mm is so much more than .380.
I had a Taurus that never gave me problems until it turned into a paperweight one day. A cast metal part broke in half. Taurus fixed it, I sold it.
I've seen my mom's p38t jam, my 2 LCP have never. Go to a shop and look at them side by side, you will see the differences. They are differences in quality, not design.
Ammunition and factory magazines are also crucial. As an example, I have 1 pro-mag for my beretta m96. Jams, every, time. Factory mags are flawless. Also, these mouse guns are prone to filling up with pocket lint when carried. A wipe down every evening and a full cleaning weekly to keep them functional is a must.