I went to the range yesterday to compare my Sig P365xl and Hellcat Pro. When I first bought the Sig I couldn't get comfortable with the grip module contour. I replaced it with a Wilson Combat module and like it much better than the factory module. The Hellcat Pro grip frame fits my hand better but the square cross section is noticeable. I can get three fingers on the front straps of both, but the short rear backstrap on the Sig allows the heel of my palm to be pinched during magazine changes if I'm not careful. I placed dot sights on both, a Holosun 407k green dot on the Sig and a Crimson Trace CTS-1550 red dot. The Holosun is the more expensive sight and had a dot that appeared more distinct and easier to use. The Sig rear sight is removed when an optical sight is mounted and the Holosun is one of the offerings that have a rear sight groove. Just enough of the iron sights are visible to allow use. On the Hellcat the optical sights are mounted in front of the rear sight. The Crimson Trace allows about half of the iron sights to be seen, so that combination allows easier iron sight use. Obviously different optical sight thicknesses will affect iron sight pictures. Trigger pull for the Sig is about 4.5lbs. but is a little ratchety. I have to be particular with my finger placement on the Sig to get an acceptable trigger break. The Hellcat's pull is 5.5lbs. but is very smooth. I zeroed the optical sights at 25 yards, using Czech fmj and Speer Gold Dots. Both were equally accurate with the military ammunition grouping about 6" and the Gold Dots about 2". In the future I'll buy a better quality of practice ammunition. As for shooting, the recoil on both seemed to be about the same to me.
Neither of these handguns is perfect, but I could live with either. However, due to the extra concentration required when changing magazines, pulling the trigger, and using the iron sights in an emergency, the Hellcat Pro suits me a little better. I hope this helps any of you folks who are considering either of these fine handguns.