I like the weight of my KMR rail, but I don't like BCM's barrel nut, nor do I like the asthetics of the KMR. For the money and the negligible weight difference I prefer Noveske's NSR. The finish on the KMR isn't very durable either, although it has no bearing on function. I don't think you can go wrong with a BCM product, though. Provided it's properly installed (and not mangled by a ham-fisted oaf like me) it ought to serve you well for whatever you do with it.