Army Veteran here, active 95-00. I didn't set out to buy a P320 when looking for a new full size 9mm and when I saw this RXP I was drawn to it but the price was a few hundred more than I had set out to spend. I had my mind set on a H&K VP9 but a fellow Vet at the shop is a huge Sig fan and talked me into trying the P320. I shot 50 rounds through the VP9 and 50 through a standard P320 and decided on the Sig. The VP9 is incredibly nice and shot equally as well as the P320 but the modularity and ease of maintenance sealed the deal for me on the Sig. I have a Wilson Combat grip on its way and I'll probably do a flat trigger eventually but the plan is to keep it subtle and battle ready.
I now have my eye on a Sig rifle but haven't decided exactly which one yet.