I traded in a 2004 Lexus RX330 for the 2007 XC90. I love the way it handles and it feels much tighter and sportier. It accelerates and shifts gears much more smoothly than my Lexus. My only complaint is the gas mileage is not as good, and I had a minor issue with the Sirius installation. This car is fun to drive!
Include compass in all rear-view mirrors, automatic lights (not lights that stay on all the time), improve gas mileage, more storage for sunglasses, etc. I'm having trouble finding a place to put all my stuff.