LCP vs P3AT vs Colt Mustang

[Rex B]

OK, spent a few minutes at the range last night. Range was darkened, appoximating twilight, normal for this range.
Taget was a dark blue torso on a white background.

Keltec w/pinky extension - As is my custom, I start by drawing my carry pistol and emptying it.
Click.
Trigger reset issue, not the first time.
Cycled the slide to reset, shot 3 more magazines, distance of about 7 yards.
Group of about 12". Could not see the sights. Hurt my hand more than I recall.
No FTF/FTE etc

Ruger LCP - Brand new, no mag extension.
Hard to hold onto, slightly less painful.
Groups were about the same. Could not see the sights.
No issues with reliability.
I noticed the slide fit to frame was loose. About 1/32" horizontal movement at the muzzle, estimated. The Keltec was much tighter.

Colt Mustang Pocketlite Used, but possibly never fired.
Ran fine through several magazines.
Sights were visible and usable.
Groups a little tighter.
Easier to hold onto than either of the others, due to better and thicker grip. I expected the short grip to be a problem, but the rubber grips and thicker width made up the difference.

As a result, today the Colt is my carry weapon. I like the safety and I like that it's single action.
The only drawback is the additional thickness, but it doesn't seem to print anymore than the Keltec.
I don't have to wonder or check to see if the hammer is cocked.
it cost more used than the other two new, and I'm starting to realize why.

I'll keep the other two for a while, but I'll have trouble trusting them.
If I find a 2nd Mustang I'll probably sell the KT and Ruger
I may inquire of Ruger about the loose slide fit.