Which rail system for .308 upper?

[nyc71]

I'm undecided between Daniel Defense lite rail & the Larue Tactical. This is going to be on a 18" .308 Fulton Amory Upper.
Please chime in if you have any experience with either or both. I want this to be as lite as possible.

http://www.brownells.com/.aspx/pid=...Product/AR-15-M16-AR-STYLE-308-7-62-LITE-RAIL

http://www.laruetactical.com/larue-tactical-ar15-132-handguard-lt15-132

http://www.fulton-armory.com/farifl...ecisionrifle-3-4-2-1-1-2-1-2-2-1-4-2-2-2.aspx