I have a Springfield Loaded Operator. It is the one with the full length light rail. It is a fantastic shooter. I put a set of hogue finger groove wrap around grips on it. They really fill out my large hands very well and are very comfortable.
I haven't mounted a light on it yet but I did notice that the extra wieght of the light rail helps with muzzle flip when doing rapid fire drills. I think the weight of the light would help even more. I'm planning on putting a surefire LED light on it.
I normally perfer a 6 o'clock hold for my pistols but try as I may this gun always hits point on at 25 yards. I have tried several different typs of ammo and they all seem to print in the same 3" group at 25 yards. The 3" group is a mixed ammo group, groups shot with 230gr hydroshock federal premiums will regulary group inside 2" at 25 yards.
I really can't complain about that kind of performance. I have been using it with wilson 8rd and a micormic 10rd magazine and have had no FTF. The only failure I have had at all was with blazer 200gr HP ammo, I had one stovepipe on me. This really isn't that bad considering I have shot several thousands of rounds thru this gun so far and I contribute that failure to a long day at the range and the gun being dirty.
My only other only other 1911 that has proven so reliable is my colt commander which has never had any failures of any kind, it also won't group anyware near the springfield, 7" groups at 25 yards are the norm. I don't think you could go wrong with the springfield 1911s.