I own a Les Baer Concept IV pistol and it is hands down the best pistol I have ever bought. It is superbly accurate (hits poker chips from 25 yards, off hand easily) and dead reliable.
I have experienced 1 jam in the several thousand rounds I fired through this gun, and that was on round 3 of the initial 300 round breakin period. It stovepiped, which was easily cleared. Narry a hiccup since then.
The gun is so reliable that I can fire it using only my thumb and trigger finger, and the gun STILL runs like a champ.
The sights on the Baer guns are perfectly regulated and easy to use. There is not a higher quality pistol made than Baer's 1911s. They are the best pistols I have ever seen.
My Baer shoots superbly small groups even with el-cheapo PMC ball ammo. It is just a phenominal shooter and is 100% reliable. Not to mention that they are a bit cheaper than Wilson, and Baer makes his own frames, whereas Wilson's are made by someone else.
Baer guns are TIGHT though, so get a good metal barrel bushing wrench. You WILL need it. I can't say enough positive things about the Baer guns. When I took the Tactical Pistol II class at Blackwater, I showed off my Baer gun. (I used a Beretta for the class because the ammo is cheaper)
Hardcore operators from all over the globe (Columbia, Canada) and special forces guys from our nation were DROOLING over my 2 toned beauty. They loved it and they all wanted one, even though mine looked pretty rough from almost daily carry.