I leased my Durango and turn it in next week and I know I'll miss it. The few minor mechanical problems were handled under warranty and the total driving experience was excellent. Of course, it's a full-sized SUV so you don't get Prius mileage. I averaged 16 mpg in town and 19.5 on the highway. What I'll probably miss most (other than the hauling capacity) will occur this winter in Colorado snows. This is a very stable, very "under control" vehicle in bad weather.
Acceleration (I have the Hemi), handling, well designed interior and especially intuitive controls, stability in bad weather.