How's Handling of E320CDI compare to other similar cars, say a BMW 3/5 series? I am looking to buy the E320CDI after owning a Infiniti G35 (excellent sporty handling), and want to see what I am giving up. I know the diesel adds some weight. I used to drive an '76 and '85 300D, but know that I can't compare how they drive/handle. I am hoping that opting for the 17' wheels will help a great deal, and maybe some stiffer sway bars for cornering.