Sold my Armalite AR. (don't start- I know, should never sell but I need to upgrade) Looking to get a high quality, lightweight, ~6lbs, 16" bbl AR, Looking at the RRA std lightweight or the Daniel Defense lightweight. Both are going to cost about the same. I've never built one and I'm not sure if it will be less expensive with what I think my criteria needs or as high quality. suggestions?