I have both at 10.5* and have been hitting them head to head on course and the range for the past month. At 105-112 clubhead speed, the Max K spins too much for me. Even lofted down to 8.5* On the other hand, the LS at 10.5* keeps spin in a great range for me. I've messed with shafts as well. Ventus Red Velocore+ on the LS at 10.5 is magic for me, but too spinny on the Max K. The Max K lofted all the way down to 8.5 with a Tour AD-VF is close to getting my spin and launch numbers maximized, but I'm still favoring the LS w/Ventus Red. I am pretty impressed with the forgiveness of both heads.