On the 2012-2013 wagons the P30 Performance Package is described as the equivalent of the later S model before the S became standard in 2014, and is widely called the one to have. Owners report a noticeable difference through the whole power band, at the cost of a stiffer, harsher ride, and it is associated with the red brake calipers.
P30 Performance Package on the RWD cars
Mercedes-Benz E63 AMG (W212) · buying