Do you use a heavy driver shaft or light one and why?

[broombroom]

Ive never been able to hit my driver consistently the r7 quad.  However I recently got a 909 f2 fairway with the voodoo shaft which I find perfect for me I believe its 70 odd grams.  Ive always prefered lighter shafts in my driver to get more swing speed so recently put in a 55g nvs which is now ballooning but i still like the weight however now ive got an out to in swing i believe because its a driver and i always "try" to hit it far rather than let the club do the work.  Im now thinking of going for a heavier shaft like 70g as well to maybe give me more control and keep me in sync well that help?

[tweaky]

the NVS has the same "body flex" as the NV but the tip is much softer which causes you're ballooning.  try a lighter weight stiff tip shaft like the NV 55g.

my swingspeed is 105+ and i still use stiff flex shafts, i just trim the tip to fit my "feel".

[kevin.chan]

Something to share about shafts. My SS is about 102 +. over the years , I have used PF V2 65g R ( tipped 1 inch ) on a 905T in 2007 PF V2 57g S on a Snakes Eyes Viper Tour in late 2009 , I try to get more speed by getting a lighter shaft , did gain about 5 to 10 yards . Then this Feb , I got fitted a 910D2 with Mitsubishi Rayon Kai'li 70 gram Stiff . I hit furthest among 3 of my drivers. Easily 10 % more than my 905 T . In April , I got the 910F 15deg with Mitsubishi Rayon Kai'li 80 gram stiff to get the same feel of my driver and I m hitting average 240 -250 y average from the tee. Best is to go to try out the shafts with different weight , and get the best one for you . One thing that I notice , the lighter the shaft , the tip seems to be less stable. Even form the same brand and stiffness , just like the PF V2 s that i have .