I WAS JUST WONDERING WHAT YOU GUYS THINK WOULD BE A GOOD TIRE CHOICE.I DO A LOT OF WOODS RIDING AND HAIRSCRAMBLES.IM CONSIDERING A 756 REAR OR THE S12 REAR.I HAVE A 756 NOW AND HEARD GOOD THINGS ABOUT THE S12,WHICH ONE WEARS BETTER?ALSO ANY GOOD FRONT TIRES?I LIVE IN THE NORTH EAST,LOTS OF ROOTS,ROCKS AND MUD. THANKS FOR ANY INPUT.