Other, Sig Sauer P238
I went down this same road not to long ago. I went to all the stores and played with them all. I set out to buy a Ruger LCP, but ended up buying a Sig Sauer Custom Shop P238. The quality is amazing, thats the number one reason I bought it. Plus I like the 1911 platform. The sights are great, they actually have nuclear rocks in them, not all P238's have the SIGLITE Night Sights on them, it takes like 50 years for them to quit working from what I have been told. The Custom Sig is all dehorned for quicker draw. Plus the sights are adjustable on the P238. In my opinion the Sig P238 is better than the Colt Mustang, they are different, just like many makers of 1911's have different models. If I had to choose from your list, I would get the Ruger LCP, very reliable as all Ruger's are. The LCP is just as good as the others on your list in my opinion, but at a lesser price.
Go try them all and see what fits you best, then buy it. I have seen the lower end Sig P238's at gun shows for $450.00. Good luck!
Clint