It depends on many things.  The d3 has a smaller deeper head that is more workable but is more difficult to launch.  The D2 has a shallower bigger head that spins a little more.  Much of it depends on your preference.  I would try them out and choose which one looks and feels better for you.  Get the one that you feel confident standing over as confidence is key.

Marvin,
Consider the 913D2 or D3. Both newer models will have similar launch and spin characteristics, but the 913D2 will be the more forgiving model, where as the 913D3 will be more workable. Also, both models will produce faster ball speeds across the entire face due to the newly designed face insert. Like Skyler mentioned, you will certainly want to try both and see which model will be more appealing at address, so you can feel comfortable over the ball.
Cameron
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