This winter and/ or spring I will be doing some improvements on the bike and need some exprienced help. I will be doing the SERT and dyno for sure no matter what. I currently have 07 FLHX, stock headpipes, Rinehart slipons, Stage one filter. I am looking at the Klock werks double back headpipes or the Super trapp headpipes. I like the looks of the Klocks but I like the price of the Super Trapps. So, would it be worth double the money for the Klocks over the Super Trapps headpipes? I know that there are lots of other vendors that offer headpipes so if there are others that are better please let me know. Thanks for any help you can offer me.