I am getting a new fork for my Fisher Marlin. I am tossed between three forks. They are the Rock Shox Duke XC with U-turn, Marzochi MX Comp with ETA, and the Marzochi MX Comp without ETA. I ride XC and rarely see three feet of air. I only do downhill if it is in a trail I am riding. The trails in Indiana are pretty flat. Looking for a stiff fork upgrade for my 80mm MAnitou Six. Thanks for all your advice.