i am looking at the great $$$$ specials out there on the LM Radical MP and the 2 TW testers (out of 5 or 6) who subsequently switched to the racquet (that's an amazing endorsement). but i've played with the babolat PD and it seems like alot of the parameters are fairly similar (i had a hard time keeping the ball in with the PD) ... please go easy, i'm not an expert and i don't have the numbers in front of me. but it struck me that most of the parameters were "reasonably similar" what would be the key difference(s) in the racquet? i'm thinking stiffness for one (although i understand stiffness ratings are all over the place - people do seem to agree that the babolat PD is very stiff). thanks very much in advance for any help! it is very much appreciated and i may buy one this week.