I really like the E46 M3 but I absolutely adore the E39 M5, it's such an awesome car, I love the understated looks, that despite it's mass it's very light on its feet, it's a 400hp 5.0 v8 schizophrenic accountant / axe-murderer, that sounds like an american muscle-car wishes it sounded and will do nearly 30mpg on a run.