Performance as been better than expected.  It has a 3 litre V6 (basically a SAAB unit), and offers good acceleration and fuel economy.  Handling is somewhat European as its its based on Opel Vectra underpinings.  Disc brakes front & back.

Build quality is OK, as far as fit and finish are concerned.  So far its been reliable.  Bought it with about 34K on the odometer, but it now has about 86K.  Had one major repair under warranty, and the rest has just been routine maintenance.

Appearance is OK.  Interior is a mixture of budget and class.  Exterior is average, and maybe slightly attractive.

Gas mileage has been better than expected.  Summertime, I get about 24 mpg city, and 33-35 mpg highway depending on average speed.  Maintenance for the most part amount to $200/year over 3 visits.

If you shutoff the traction control, its little more fun.  With the TC on, it absolutely does not let the tires slip.  Handles pretty good on the highway.

Performance- is great
Build Quality- never had any problems it's like new.
Appearance- Black, chrome wheels, sun-roof, automatic everything, on-star, V-6 engine, leather heated seats.
Cost of Ownership- I spend about $50 to fill it up.