I prefer the P365 over the Hellcat, but they are both great pistols as far as I can tell. The Hellcat has an edge (slight) in capacity unless you include the newer 15 rd mags for the 365, which I have never tried. And the Hellcat can be set for optical sights much more economically too. However, I feel like the P365 has a better trigger all around crisp and short reset, and I prefer the sights on the Sig over the Hellcat too. They both shoot good for small guns, but the Hellcat seemed a little slower for me to get back on target; recoil felt like a little more snap, just enough to slow me down a tad. Not a big deal, but I noticed it. Finally, for my hands (average size) the grip on the P365 feels better. The Hellcat is a little wider, more blocky. Honestly, it is really personal preference because they are both good shooters, easy to maintain, accurate, and for what I know, reliable. I do not really have a complaint against either, just a preference for the Sig. I have been carrying a P365 for over a year now, and it has operated flawlessly on any and all ammo. The Hellcat I only got to shoot 100 rounds through, but it fed all and ran good with ball and hollow points.
For what it’s worth, I looked at a S&W 9mm EZ at a local store. Seemed loose, almost slop in the slide...not interested in the slightest.