I have played Tensei Red in my irons but we went through a proper fitting so my "thoughts" would be, the only thing that matters is what feels right for your swing and gets you the result you need. Even if hundreds of people did not like Tensei Blue iron shafts, if they work for one individual, he/she should go with that shaft. I have never really understood the logic in asking for an open opinion to back up a personalized decision. Anyway, hope you either get a proper fitting or find a shaft that best matches your needs.

I have the Tensei (AV) blue in my T300s. Was fit at the Titleist fitting center at Pinehurst two years ago. These shafts performed better (for me) than the Red (AV) and the AMT Red Steel shaft. At my age (70) these shafts perform well for me and are much easier on the body. Using the Prov1x with these clubs I get the performance I am looking for. If it doesn't feel right, try another shaft. Your fitter will find the right shaft for you.

I have the Tensei (AV) blue in my T300s. Was fit at the Titleist fitting center at Pinehurst two years ago. These shafts performed better (for me) than the Red (AV) and the AMT Red Steel shaft. At my age (70) these shafts perform well for me and are much easier on the body. Using the Prov1x with these clubs I get the performance I am looking for. If it doesn't feel right, try another shaft. Your fitter will find the right shaft for you.

Can you explain why the AV Blue AM2 shafts performed better than the AV Red AM2 and AMT Red? Driver swing speed, tempo, etc.

Red have a lower flex point therefore would “kick” your club head more than the Blue, resulting is a higher overall ball flight. That lower kick point could also lead to less control of side spin.

I appreciate your comment Dale. I know the best thing would be a proper fitting, but that is not currently an option. I'm currently playing T300 (2021) irons 4-PW with AMT Red shafts in regular flex. Without knowing my swing etc., in your opinion would the Tensei Red or Blue be more appropriate for someone with a low 90s driver swing speed and a smooth transition/tempo.