I came off of a 2005 F150 Supercrew lease and had been looking at several vehicles. They included the Camry, Accord and Sonata. I also looked at the new Taurus. All fine cars. The Taurus is just huge when compared to the rest. I found the Fusion to be well priced given it's features and reviews. It's quiet, well mannered, and generally a pleasure to drive. The gas mileage is better than rated but then again compared to an F150 almost anything car-like is. The old adage of "have you driven a Ford lately" really drives home the feeling I get with the Fusion. Try one, you just might like it.
Quiet cabin, Sync, mileage, and handling.
Perhaps a bit more power from the 4cyl. I think it's coming in 2010 models.