I was fitted for a x stiff shaft by a local shop but had to back out of the clubs due to a knee surgery:( but since the surgery I have got my driver speed back to a avg of 114mph don't know my 6 iron speed but I hit my 6 iron here in Washington 165 170 well I call Washington southern Yukon lol so air can get pretty heavy and cooler. All excuses I hear from playing partners. So hope the px 6.0 are gonna work