Originally Posted by vetinari
I've hit with the speed mp and the instinct mp. I posted my thoughts in the other thread about 2013 speeds. Overall I think the speed and instinct are good upgrades, especially the speed. I thought it fixed several things about the IG speed that I didn't like -- more power, better feel, bigger sweet spot and improved torsional stability. Also decreased vibration. I really liked the graphene speed. Some wont though. It's stiffer than the current gen (but I think more comfortable strangely enough) and the beam on the speeds is wider which really bothers some players.
couple of simple questions
How do you know that torsional stability got IMPROVED?
Do you know numbers for TWISTWEIGHT
Did you practice returns of serve?
What is "graphene speed"?