Every single person is different in how they swing, speed, tempo, etc. What works for one person may not work for someone else. That's why there is such a wide selection in brands, models, weights, and flex. You need to test multiple options on a swing monitor to know what works best for you.

Are you getting too much spin and/or launch angle? Access to an electronic monitor for the exact numbers. New shafts from Titleist run around $150. That’s enough to have a fitter go through alternatives, including the Tensei for your best option. If the KK isn’t a good fit.

I got the Tensei Blue for a TSi-1 with the Ascent 40 g shaft. The spin numbers with the Ascent were running 4000-5000 rpm’s. With the TSR-2 the KK was less than optimal. I was working with a fitter on hybrids and fairways, so he threw in checking the driver, and we went with a HZDOUS Red. Only paid for that shaft.

There are a lot of good on-line reviews of shafts. I am going to get fit for a utility iron and 3 wood (both Titleist of course) and was curious about the characteristics of certain shaft options. So I did some searches to get an idea of what each shaft does.

But as stated above, try them in a fitting before buying. Go in unbiased but IMO never hurts to be educated about the options.

The only way to find out properly is have a fitting but also let them find the shafts for you don't go in saying I want etc