Sorry I missed this.
VERY nice car. Was definitely on the short list before buying the 300C. The 300C just took it for me in the battle of trade offs. Preferred the handling of the G8, while I liked the engine/trans combo in the 300C more. More usable back seat in the 300C, nicer, sportier feel in the front of the G8.
In the end what won me over was getting a great deal on a 2010, and of course, there being no 2010 G8's. Otherwise, I could have been ecstatically happy with either car.
Great choice! I know you are gonna love it.