Welcome to the new and improved Proflex / K2 Tech Forum!
I have been using the Avid Flack Jacket ones,but that Gore system looks REALLY nice. Have not had the nerve to try the Powercords for shifters, but I like the weight.And the Nokons just don't look right to me.
I have a mix of Gore ride on cables and Jagwire Ripcord, and Avid FlakJackets. TBH al good. the Jagwire ones came with alot more bits and bobs to make em dirt proof, like little rubber boots, and better cable ends. The thing to do is to run fully enclosed cables, although this can mean drilling out the cable stops , or fitting adapters (Hope). The Gore system is well made, but XTR is also very good. Also worth a look, if you can find some are Transfil Black snake / flying snake combo