Remember the golf digest talked about driver length a few weeks ago. It did not answer any question though. In that article, it said that 50% played 46, the longer shafted driver about 5% longer, and the rest get a 5%distance loss. Basically, it is just a gamble without fitting.
However, I have a theory of my own. I am building a EMS. I choose to go 46. I am using the af tour iron, with very weak loft. I am tring to have more accuracy in the irons, and make the driver to be a loose cannon. Thus i am choosing the EMS, more MOI, over the 102, with more control. With higher forgiveness, I am able to bear the 46 length, as mis-shot is not that terrible, or to say I will have more buffer in finding the sweet spot.
Am I doing the right thing?
In a fitting session, I really did find the difference between a 45 and a 46. Maybe I did not spend enough time.