Proforce V2 Shaft question
 

I recently hit a demo Proforce V2 shaft and really like the feel. I believe I'm going to go with this shaft in a new driver but I'm not sure which model to get. From the USTS website I see this (sorry for the formatting). I'm guessing there is no way to know which model is best without hitting them all. Any ideas?

Spec Information
MODEL WEIGHT TORQUE LAUNCH ANGLE PTS BUTT FLEX MID FLEX TIP FLEX TIP OD BUTT OD LGTH
5500 A 52g 4.5 High 4.0" 230 5.5 20 0.335" 0.610" 46"
5500 R 53g 4.2 High 4.0" 243 6.3 22 0.335" 0.615" 46"
5500 S 53g 4.2 High 4.0" 261 7.1 24 0.335" 0.615" 46"
6700 A 63g 3.8 High 4.0" 241 5.8 23 0.335" 0.600" 46"
6700 R 64g 3.8 High 4.0" 256 6.4 24 0.335" 0.600" 46"
6700 S 65g 3.7 High 4.0" 270 7.1 26 0.335" 0.600" 46"
6700 X 66g 3.7 High 4.0" 285 7.7 28 0.335" 0.600" 46"
7600 R 74g 2.8 High 4.0" 257 6.4 24 0.335" 0.605" 46"
7600 S 75g 2.8 High 4.0" 272 7.1 26 0.335" 0.605" 46"
7600 X 77g 2.8 High 4.0" 286 7.8 28 0.335" 0.605" 46"

I bought the 83 gram model and love it, it lowered my ball flight and allowed me to hit a more lofted driver. Of course, it may be too much club for a swinger. (kidding)