Go to the store or the pro shop and try some demos. I have a 2007 Burner Draw HT loft M flex (13 deg "senior"; however, it may be stiffer because the previous owner shortened it to 45" and put a lighter grip on it to restore swingweight and my previous experience with senior flex is that I get a wicked push-slice because I torque the head). I can tee the ball very low (about 1.5") and it gets a lower trajectory than a 10.5 deg neutral driver (and much better distance - I average 240 out of this so-called "old man" driver). I went to a demo day and tried three R11 drivers and came to the conclusion that I might as well save my money (the stiff flex went dead straight but I lost quite a few yards vs the r flex and a flex).

My pro, is my golf coach on my team. So I'll be going to dicks and another place to hit them. I need to know the main diffrence between the d2,and d3.