Technically the Rad Pro is 62 flex. For me it just felt too soft..may have been the strings, but I need a little crispness on top of that plush feel to really like a stick. I get that with the yonex, even though it is in the same category.
Have to say this is the best I have volleyed in a long time. the balance definitely helps me there. Also had a nice overhead that went over the fence off the bounce. Forehand winners are seriously automatic now. If the ball sits up in my zone, I put it away. Definitely grooved into this racquet with the string setup and stock weight.