I've owned a Shelby GT500 for 30 years, but it finally got too valuable to drive. Enter the 1999 C5. It's a terrific, high smiles per dollar car. Faster than the old GT500, and nearly as quick, but with many more creature comforts. It won't replace the Shelby in my garage, but is a terrific daily- driver and is here to stay. I like the black on black, no frills approach. One of my friends said it looks more like a weapon than a luxo- cruiser. I'm 6'5", and it fits well.
Power, interior layout, seating position, lack of cupholders (it's a driver's car, after all), exterior shape. HUD and Active Handling are terrific. Brake system - stops as well as it goes.
Maybe a bit more dominant exhaust note - louder, not different. Privacy glass (deep tint) standard on rear hatch. Maybe adjustable pedals (my wife is a lot shorter than I am).