I would also agree that Pure drive 2012 has little better solid feel on impact that Aero 2013.
Aero 2013 has really changed to lower the swingweight and make it easier to swing. and I think it is a great improvement over the past versions of Aeropro's. but I really do prefer the Pure drive 2012 for the volleying, just better feel for the ball. It is slightly better for serving as well..... slightly
Babolat Pure drive 2012, 55 lbs, Kirschbaum Proline X / X-1 biphase. Nalbandian backhand and Nadal forehand.