I trade every two years. I love the RX400h. It has surpassed my expectations but I greatly prefer a sedan to a crossover. Although I had driven a Prius of a friend and was enormously impressed,I wanted more luxury and performance and with the RX400h becoming available when I was checking cars, I decided to take the plunge. The hybrid synergy drive is so superior to the ordinary power plants that I will only purchase hybrids in the future. The term "hybrid " is used to cover all additions of an electric motor to an ICE. But all that I know or have read about what other auto manufacturers are planning leads me to believe that they will not come close to what Toyota/Lexus has accomplished. Toyota/Lexus with the GS450h has a power plant which is another major step forward. So much so that my decision was made without hesitation. The RX400h is in such demand around here that my depreciation will be minimal, and I'll have a car, the GS450h, next year that certainly will be in great demand.