this is what happened 2 me
i had my cobra with the standard shaft
it was rely whippy for an xs and i wasnt v impressed, i tried a few friends
clubs (r7 w/ pro launch, r580xd w/ nvs, ignite w/ vista pro & erc w/ nv) pro launch was too high for me, not enough roll, the nvs & vista pro were v whippy, nv was jus right, we all av xs shafts n its gr8 fun avin long drive contests on a dogleg left par 5
dependin on what you need:
LOW TRAJ = nv or vista pro (slightly more whippy, cuz its lighter)
HI TRAJ = pro launch or nvs
i use an nv 75 xs & regularly drive 300 with the 9*
my swing speed is 110, n i hurt all over but its worth it, sowwi its long but i had 2 say, oh, n my longest was 376 with the wind 35 mph behind me
L8RZ
Jamie