Out of the two the op listed the STI is the better of the two pistols. Kimber makes a pretty good pistol but I don't see it being better than any STI. That being said I would not like to be limited to just those two choices. In the price range those arein there are a few others that can fill the need as well or better.
Colt, Springfield both make fantastic pistols. I'm a Springer fan most between these two but I have never owned or shot a Colt that disappointed me. Some will point out that the Springer frames are not made here in the U.S. anymore. My only reply is...So? I own one made here and one of the "Not American" models and can't count the rounds that have been through either. When it comes to Colt all I can say is...It's a Colt. THey did it first and have put out quality 1911's since. The last Colt I had was a Combat Commander that could shoot 3" and under at 25 yards easily. I would do almost as well or at the least 4" at 50 yds. Colts are pretty pricey but they are very well made. And you would not walk away feeling like yo didn't get your monies worth.
Para Ord make really great pistol. Take a look around the auction sites and look for a used one. It's next to impossible. This tells me that people tend to hold on to them. I also love the ramped barrels on most models. This makes feeding any type of ammo no trouble right from the box.I've shot quite a few and own two, both have been flawless.
There are others but this post is long winded enough.