I've researched a lot of cars and found this to be the best bang for my buck. It is a true sports car, yet a gentleman's car as well. Highway driving is very comfortable. It handles extremely well in autoCross races also, easily beating cars such as the Porche Boxter. My only regret is not buying sooner.
Power. Very smooth and quick acceleration. Engine note is wonderful. We tried the Nissan Altima Coupe with 3.5L first and noticed a drastic difference as soon as we sat in the G35. Braking is unbelievably good.
Clutch is underpowered for aggressive driving, but it IS included under the warranty. My power steering went out also @ 22,000, but was covered (with clutch). Rear brakes replaced at same time (for $225).