I remember about 10 years ago Kimber made far better pistols than they do now. Around the time the Warrior came around the production quality took a nose dive, at least to the ones our shop were getting, and we were the Canadian National distributor for their handguns and rifles.
I still like my warrior, it's seen hard use, and I have a TLE 2 that I used for single stack shoots around here with many thousands of rounds through it, I can't be exact, but very very few malfunctions of any sort with it.
There are SO many good manufacturers now...I've been running a NightHawk custom gun for a while now, and it by far is the best 1911 I've owned. It's a semi-Bull barrel 1911, not a bushing barrel, sort of an integral bushing, and I think that it's the way to go for a carry/duty 1911. It locks up in such a precise unique way, that there are many competitions where this pistol is disqualified as it gives the shooter "too much of an advantage".
I also shot a couple of 1911s that Larry Vickers had at a course I did on explosive entry, pistols that were built custom for SF personnel, and they were by far and away the best in terms of trigger pull and functionality, but they weren't for sale or based on any model that you can just go out and "buy" like a NightHawk.
As for AR15's, a previous poster (BillyD) made a great analysis of most of the current manufacturers, but he missed the best one IMO. Of course, I am biased a bit, my friend and former instructor Kevin Boland is their military sales rep now - Knights Armament.
You said Ar15??!