BMW540i6 
1999 BMW 5 Series Sedan 540i 4dr Sedan
All Day Amusement Park!
 I absolutely love the 540i 6speed.  It has tremendous torque for when I want to go fast, but is elegant and civilized when I have the two infants in the back.  I enjoy doing the work myself so labor cost is not an issue, but parts can be more expensive than some other makes.  If you're an enthusiast like me, you'll love this car.