Driver compare Spoiler alert - as I went through each driver I got faster and longer.  I will test again but change the order. Started with Callaway Mavrik 9 degree 6.0 stiffness ( I threw out the mishits) 207 carry, 97 swing speed, 128 ball speed, spin 3126 2nd was the Stix 10 degree loft, 6.0 stiffness 223 carry, 102 swing speed, 135 ball speed, spin 2913 Then, thoroughly warmed and loose, the Kirkland  10.5 degree loft. 6.0 stiffness 232 carry, 104 swing speed, 140 ball