I'm having a hard time deciding what free float forend to put on my Colt 6920. I currently own both the DD Lite Rail III 12" and the Geissele SMR MK1. I couldn't decide which one I liked so I just bought both hoping that would make the decision clearer, unfortunately it has just confused me more:/ I love both systems and both are of the highest quality. At first I steered away from the quad rail as it was heavier than the modular rail (or so I thought..) Until I weighed them today.The DD rail is actually lighter with all mounting hardware included (and a plastic bag..) What are your opinions on these two systems? My third option is to get rid of both and buy the BCM KMR. Too many choices! Input is appreciated.