I'm hoping TW stocks these frames soon because they seem to be pretty good at giving the real stiffness. They said the Blacks were 59, and I can see that. DC Plat feels like 64 to me..basically same as a newer prestige.
I noticed when I bounced the ball off the strings between points it was vibrating it a lot. I think the ends of the knots were touching the frame causing it, because that was new. I only hear vibrations when bounce the ball off of the top of the racquet, and when I hit I dont feel any ever.
The Prestige Mid would let me know if I missed the sweet spot all over the frame, the Donnays are much more kind. When you rip a perfectly clean ball with them, it feels as good as any stick.