I just received my first ever Sig yesterday, a P320c RX. My first observation was the build quality compared to Glock. This Sig, to me, seems to be of much higher quality. The gun is so tight, which I appreciate, as I can't wait to break it in and see how it settles into it's own. The optic is definitely going to take some time to get used to, and I can already tell just by looking through it that I need to stabilize my grip more as I shake more than I thought. Just my initial impressions.