My dad is gettin a new car within the next week.....he needs help. He's a businessman, needs an assertive but comfortable ride, nice interior, but still want's the car to have crazy amounts of power. He's got the choices down to these three, but cant decide. I have spoken to a few people with the 328i and they all have had great things to say about it. I'm partial to the S4 because it kicks some serious ass. Anyone know anything about the lexus? Keep in mind these cars are staying completely stock, with the exception of the Lexus's tiny 16" rims. What do you guy's think? Criteria: Ride quality/sportiness/Handling Power/delivery Reliability Best bang for the buck/fun Thanks guys.