I have owned Impalas for 10 years now and love them. I prefer a larger car with some room to move over compacts and this car delivers that. The car's interior is much more refined then my 2005 was. I think the luxury package, is a great addition and I really appreciate the upgraded interior. The extra engine power in the latest model is nice and the car never lacks pickup when it's needed. The car handles well in town and on the highway and delivers respectable mileage, especially considering the size of the car. I have had this car for 6 months and have not experienced any issues with quality or reliability; from my experience with Impala I wouldn't expect to.
I have the LT with the luxury package and love all the interior styling and features. I like the power that I get from this car and think the mileage is pretty good, espcially when considering the amount of car I have.
I would like to see the Impala get its true round tail lights back some day.