Don't like Porsches
In terms of pure driving pleasure that would be the best choice.
I prefer the Vantage to the DB9... The DB9 is more of a grand tourer or cruiser while the Vantage does that while also catering more to the driver. The Vantage also arguably looks better. A Vantage Volante 6 speed is the perfect weekend car. Beautiful exterior and interior, good ride, raucous exhaust note and it exudes classiness. Its not as in your face or ostentatious or screams midlife crisis like your other choices (Maserati Gran Turismo, SL65 AMG, Ferrari for example or anything American lol). A quintessential gentleman's car.
Haha do let us know which one you end up going with, OP.