How do stiffness and vibration/feedback correlate with each other? My MG Radical MP has a lower flex rating than my Pure Storm Tour GT but it doesn't vibrate nearly as much on hits (if at all) as my PSTGT. So because it doesn't vibrate as much, does that mean it has a "stiffer feel" or am I experiencing a more "solid feel?" I still feel the plushness of the MG Rad and it's definitely more comfortable to hit with. Just wondering how stiffness and vibration are related. On a side note, I've been looking at the Volkl PB10 Mid and it looks like the perfect balance between my MG Rad and PSTGT. Can anyone comment on this racquet compared to the ones I already own in terms of feel? Thanks!