Wow Gary, we do have similiar tastes I think.  I bought a BCM Mid-lenght complete AR after researching long and hard.  Also after having several other brands (Colt, RRA, BushMaster), they were nice guns, but wanted to jam more than I liked.  Nothing major, but I wanted as close to 100% as I could get.
As I mentioned, I have one of my best high school friends who now lives in Ogden Utah, and is on the Salt Lake City SWAT team.  I presented him with my dilema and he mentioned that they had a AR guru on the squad.  Supposedly knew everything about everything concerning AR's.  He told me he would ask for a recommendation for a complete AR production purchase.  Conclusion came back to buy a complete BCM rifle.  I took his recommendation and went with it, and haven't looked back.  Everything mil-spec on the BCM's which I liked very much.  As Gary mentioned, the upper to lower fit isn't super tight, but boy, this thing is dead nuts reliable.  I have even had to use some of the old crap ammo from time to time, and she eats that stuff up.  Just have to make sure I clean it really good after that.  Haven't thought about another AR purchase after having this one.  This is the one for me, no doubts, and I will agree with Gary, BCM comes highly recommended.  
Here is a pic I took after a cleaning with my Glock 34.  My BCM has Troy Ind, folding front and rear battle sights, troy front vertical grip, Larue Tactical rail index clips, optic is a Leatherwood Hi-Lux CMR (Close-Medium Range) 1-4x24 Illuminated reticale scope, with a Burris mount.  
![[Linked Image from i304.photobucket.com]](http://i304.photobucket.com/albums/nn186/Bapple/BCM003.jpg) 
  ![[Linked Image from i304.photobucket.com]](http://i304.photobucket.com/albums/nn186/Bapple/BCM001.jpg) 
  ![[Linked Image from i304.photobucket.com]](http://i304.photobucket.com/albums/nn186/Bapple/BCM002.jpg)