i have played both shafts extensively. my 983k 9.5* had the aldila nv65s- the green shaft and my current driver 905r 9.5* has the 66 gram v2 s.
the nv plays very stiff, almost x stiff. more than one club fitter has said that most single digit players should not play that shaft. its to tough to hit consistently with slower swing speeds. it has a higher kick point so i struggled to hit the ball in the air. my launch angle was consistently 10-11 and i had a hard time feeling like my swing generated enough speed to really flex that shaft. and my driver speed is like 107-110. my misses were low power draws- hooks. when i hit it good and it was dry, i would hit my draw and i would get 30 yrds of top spin roll but many times out of the fw into the tall stuff. i never got a nice high ball flight though and that cost me big time. after 2 yrs of that shaft i finally said enough.
i got fitted for my 905 and after looking at many shafts i settled on the v2 stiff and could not be happier. first, the 66 gram v2 is way better to get the ball up. its lighter weight, compared to the 77 gram v2 that comes with most stock drivers. the ligher weight works for me and i can really gernerate more speed. the v2 has a lower kick point as well and that gets the ball to jump at 13 * for me which is ideal for my swing speed. i can feel this shaft flex and i know the shaft is is giving me that extra snap that i need to get the ball airborn and carry it farther. its also very accurate. i hit way more fairways now since my ball flight is higher the ball does roll less and stops in the fw.
bottom line, for me, the v2 is the best combination of flex, launch angle, accuray and weight for my swing. get fitted though, for sure. it makes a world of difference.
905 9.5* w/ v2 s
904 3wd 15* w/ speeder s
tm 200 steel 5w 18* w/ prolite s
585h hyb 21* w/ 4175 s
585h hyb 24* w/ 4175 s
miz mp30 5-pw w/ rifle 6.0
vokey 54* spinmill
vokey 60* raw
ping redwood anser 34"
pro v X
miz aerolite tour standbag