I purchased the 913d2 (.5 just before xmas to replace my 2008 TM burner. I was sceptical at first going from 10.5 to 9.5, but what a difference. It is set to standard for a left hander with a Diamana S+ Blue 62 regular  all i can say i WOW, great feel of the face excellent penetrating ball flight and great distance i have added about 20 meters on my drives. In my first competiton round i had 41 points the first time in many a time that i have shot 40 points or more. I beleive this came with the confidence i have off the tee with the 913 driver, I know i can hit and hit it very well, makes a difference. I have also purchased the 913 fd and 913h more revies to come.