At our Biali Motorsport meet on sunny Saturday, amongst the cars gathered was a CSL and a RS4. Friend Roy, who used to have a Mk4 R32 and is now running an Audi Avant TDI and is missing petrol, went out in both. I said to him: "Money no object, you have just won the choice of either of these cars completely free of charge, which would you choose?" He thought hard for a couple of moments and then said that the RS4 would be the best allround family car but the CSL was far more exciting and so the BMW is what he would choose. I think the same. But each to their own - They are actually quite different cars.