You are rotating between all several single stack and subcompact 45s you own? That's a 9+1 Mod 2 and G27 and a 6+1 Shield and CW45.
If Kahr made an all steel MK45 or K45, I'd carry that. Right now I EDC a K40. I have owned a Shield 9mm, 40s&w, 45acp, and Shield Plus. The Shield and feel of the 45 Shield is the best IMHO. I put a mag through a friend of mine's XDS 45 several years ago, but didn't like it. I wanted one until I fired his. The Shield is way more softer shooting. I'm not a fan of Glocks, so the G27 was never on my radar.
xd...you are spot on. The Shield's feel the best, I agree. I have no issues with them in any caliber. The CW45 is the reason I'm thinking about the XD-S. I've had nothing but issues with the CW45. It refused to go into battery without that extra push. I reduced the extractor spring force but taking about 0.02" off the spring rod. I won't settle for less than 100% reliability. I then upped the main recoil spring to 20 lbs. that too has helped. Lastly, I went to a higher charge of Power Pistol in my reloads. Pulling the trigger on the CW45 is like a mini nuke blast. Last range session was close to 100%.
My G27 is my only Glock. If Gaston made a 45 in the G27 frame, I'd be all over it, likewise my ideal gun is Kahr K45. I have it direct from Kahr CS there are no plans for a MK45 nor a K45. K40? I have the K40 Covert, that's a large slide on the MK40's small frame. I've only put a few rounds through it so it's not yet in the carry rotation.
I know what you mean about wanting the XD-S until you actually fired one. I had the same experience with a motorcycle. I lusted over a Honda Magna until I managed to test ride one. I didn't get into high gear before I decided there's no way I'd ride one of these things. Likewise, I fired my neighbor's SA P365, no thanks. That's why I asked about the dimension of the XD-S's muzzle. I don't want to spend the bucks for another 2 by 4 with a grip.