I purchased my Alero in 08. Checking the head gaskets prior to purchase is essential since they go bad on the 3.4 V6. Had some minor issues after purchase such a water leak on passenger side console. A cheap foam patch from the dealership corrects this problem. There is also the occasional problems with wheel bearings. Also, the rear defrost system failed due a failure of a control module in the rear of the car.
Apart from some rust issues, car is pretty reliable for the most part.
The Alero has great handling. Considering its an Oldsmobile, it has great styling with decent features for a base model (cruise control, power windows, V6 option). Great passing power when coupled with the V6 engine
Do something about the head gasket problem. Lucky mine were replaced before I purchased my car...