I was looking at the stats of the 27" Babolat AeroPro Drive and the Pure Drive rackets and there seems to be so little difference - but there obviously must be.
Well I've never used either of those of racquets but one difference is that the AeroPro Drive uses the Aero Modular technology so I guess it's more aerodynamic.
to tell you the truth the aeropro drive only feels easier to swing when doing slices. I found the pure drive to actually have an easier time getting racquet head speed on normal groundstrokes than the aeropro drive.