First off, thank you so much to all of the reviewers in this thread. Because of all the rave reviews I just picked up a G400 Max head. Was just at the range with a few different shafts to try and dial it in and all I can say is WOW. This thing begs you to hit it dead straight.
I think for now I'm going to go with the Fujikura Speeder 757 X-stiff. Was launching balls at the range. We'll see how she handles her first 18 tomorrow!