2008 Nissan Altima 3.5 SL 4dr Sedan (3.5L 6cyl CVT)
This a very fun car to drive and my wife and I both enjoy the balance of comfort and performance. However, the navigation package is practically useless because many of the features are not usable while the car is moving. It drives me crazy. So, either don't buy the navi and get a Garmin or buy a car that has a functional navigation system.
CVT, performance, economy.
The navi system is actually very good. You just can't use much of it while you are driving!! So why spend $2K for it?