I recently had my stiff stock driver shaft upgraded to a stiff V2 Proforce.
I have wanted to replace my driver shaft for several months now but due to a very hectic schedule I was unable to. I had battled around with the Aldila NV shaft for my driver as well as a few others. I finally went to GolfSmith last week and played around with a few drivers and shaft combos that they had and fell in love with the V2. (Everything looked good on there launch monitors but I really don't trust those as much as just going to the range)
I had that bad boy installed and used it this past Sunday on a links style course. I was impressed! I wanted that mid/low ball flight and I got it. I was putting ropes where ever I wanted them! If I wanted to play a draw/fade I could on command.
I was VERY impressed with this shaft. Just like very other company who makes shafts there are different weights. I picked up a 65g. Right now they are $59.99 at Golfsmith so if you are in line for a new shaft then give this one a try. Let me know what you think.