Ferrari revealed a relatively faster 599! If you find the 599XX slow, the hard-core version of 599GTB. Here you have the opportunity to own a faster 599, 599XX Evolution. Like the “slower” model, it is packed up with Formula 1 technology. Active rear wing and front splitter, two flaps in the rear open and close to adjust the down force on rear axle. This relatively faster model has extra 20PS and achieves to produce 750PS with 700nm torque.
Unfortunately, you cannot drive your relatively faster 599 on streets. It is offered by the Ferrari Corse Clienti and it is designed for tracks.
My opinion: Go for a 599 GTO, it is very fast and can be driven on the streets without any problem, also offers much better comfort than the XX Evolution.