Right now:

2009 BMW M5. 4 doors, 4 seats, comfortable, V-10 with a 8,500 RPM redline. 500 hp. Handles well, looks good, and with the Meisterschaft exhaust system that makes the damn thing sound like a Ferrari V8.

The sound: http://www.youtube.com/watch?v=vt1_OKkZzp4