Just got a 910 fd with project x shaft 15*, it gives me a great boring flight actually a lower ball flight than my 905 9.5 driver. My question is I am looking for a new driver either a 910 or 913. Should I get a project x shaft or is the 913 Diamana white going to give me the same type of ball flight. I have been fitted at demo day and the titleist  guy said the 82 gram shaft gave me the best ball flight but I don't want that heavy a shaft. Any thoughts?

Don