Basically from my personal experiences and what I hear other say 1st gen babolat pure drive was PERFECT...but under pressure to "innovate" babolat had to do something so they basically started messing with it and they made it worse every year after that...only to "fix" next one in 3yrs cycles with new and "improved model" that would "fix" what they effed up previously...
In short ANY version before cortex will be better than these new ones they are making now...
1st gen was 300gr 67 RA open pattern beauty (yes the one fognini is using still till today)
2nd gen they "improved" 1st gen by closing string pattern and making it stiffer (74 ra) so they added woofer to make it appear more comfy than it is...(people arms started to hurt)
3rd gen they made it softer by a little 74 vs 70 again but with the same less open pattern and added kevlar (people arms started to fall off)
4th gen they "fixed" discomfort that most likely stiffness and Kevlar caused by adding cortex and forever effed up pure drive
5th gen they tired to FIX disconnected feel that cortex brought with smaller cortex and they added tungsten...WHOOPS they lied that they added tungsten I mean...BUT at least they painted tungsten fibers on the frame so that it least looks good
6th gen they continue to eff around with cortex this time naming it active cortex cause it ***** sound like its doing something and they of course LEFT Graphite tungsten (GT technology) in the frame cause its good for us RIGHT...only that it not really there...
7th they decided to close open pattern racquet even more cause they were left with NOTHING else they can do...
And don't fall for this we saw in the play app BS When I was using Play app form the beginning I saw that it was recording my hits as upper hits...bunch of us that were testing it complained and they FIXED the app so thet it started registering our strokes more to the middle...we were told it was software error...year or so later not they are saying that was not an error but the whole string bed needed to be changed...please...starting to sound like iPhone you are holding it wrong Steve Jobs antennagate...
Anyhow you get the picture...try to find older pre cortex model and call it a day....