I bought this car used as a rental. I maintain it well. The mileage has been very punishing city driving 95% of the time. I average 16mpg city and 27mpg highway. Other than an issue with the brake proportioning valve, the car has been very dependable. It is my "beater" and keeps on ticking. The performance aspect has been very surprising. With the right tires the car handles well in the rain, snow, and, of course, dry conditions. Acceleration is good with lots of low end torque (3.8L V-6). Interior is comfortable and roomy but plain. This car is a keeper.
Engine, handling, dependability.
Better styling. More options. (It's too late though, GM has shut this division down a long time ago).