They are a good shaft. The Tri-Spec and Dynamic Golf have different playing characteristics. The Tri-Spec are designed to get the ball up and DG are designed to lower ball flight. 

Nice.  That's my golf store of choice.  Looks like I know when I will be buying a 910.

Can you provide some details on the fitting process?  Will a wide variety of shafts be included?  Is the fitting process free as long as I buy a driver?  Can I bring in…

Hey Dennis...I live in south Boca Raton... the closest golf courses to me are Hillsboro Pines, Boca Dunes, Boca Raton Municipal, and Deer Creek.  Please let me know if you would like to play a round of golf one day... my email is jebadiah42@yahoo.com