Traded in my wife's '08 Taurus SEL. Wife now drives my V8 Explorer. The Taurus was MUCH larger in the cabin and the trunk, had much more power (Ford's 263hp V6) and was much more comfortable on the highway. However it handled fairly crappy and got roughly 30% fuel economy.
I'm much more proud to drive the Focus to work, it looks sexier, gets great mileage and handles way better. The Taurus's front facia in particular was pretty gaudy.
I looked at it financially though in order to justify another new car purchase. We were slightly better off financally buying the Focus with its fuel savings than paying off the Taurus with 40k miles who's bumper to bumper warranty had just expired and which was going to need new tires soon.