Posted 14 February 2013 - 08:03 PM
I own way too many of these shafts and cannot bring myself to sell any. Yet.
I started with an all-black Kiyoshi Prototype 6/04 flex in my 910 D2 about 2 1/2 to 3 years ago, and since basically won't play any other brand of shaft. The proto was/is on the light/soft side, but extremely smooth and 'reliable' I always knew where the head was.
I currently have had a Kiyoshi 6/04 in my 913 D2 ( and previously 910 D2) 10.5 for over 2 years now and love the shaft - it's a mid launch with plenty of hang time and definitely helps lower sidespin - but certainly no silver bullet for poor swings. I am about a 100 s/s and 9 HCP - not that long (260 - 280). I prefer a flat penetrating ballflight as I play a course where the wind often gets up to 25+ knots/ 2 clubs
The Kiyoshi Is extremely smooth and very stable when you consider the smooth feel of the shaft. I have several mates and players at my club (fast ss/+1 to 3 HCPs) on to the shaft now, and all agree it is the business.
I would agree with most that the Kiyoshi plays 1/2 to 1 flex stiffer than most other shafts. I have a 6/03 flex in an Adams 9064LS in my backup bag that I regularly use when playing with my Dad in Sydney and the feel is very similar just as stable, but softer.
The shaft certainly helps me get the ball up in the air, important as I have learned to swing 'right sided' I do not hit 'up' with my driver. (BTW - Peter Kostis has zero idea about the mechanics of RSS)
I have a 7/04 flex Kiyoshi in my 15 deg 910F, which is also fantastic, but have recently acquired 7/05 Devotion in a Ping Anser 14.5 which has kicked the Kiyoshi out. Devo is very light, tight and stable vs. smoother softer Kiyoshi. I also hit this club up to 20 meters further than the titleist and as far as my driver into the wind.
Also have the Devo 8/05 Hybrid in an Adams 22 deg A12 - which is lighter and longer than the 19 deg Titliest 910H/Kiyoshi I was gaming.
Also have tried the Revenge in driver (too light & high), fairway (Very good - great carry) and hybrid (amazing - nearly as good for me as the Devo).
All are great shafts and as good or better than any high end stuff you would find on the market. Bear in mind I like a mid - low ball flight, am not super long and favour accuracy and control over outright distance.
If you can, try before you buy, but otherwise i would recommend a Devo in 05 flex if you like stiff shafts or Kiyoshi in 04 if you favour smooth.