 I almost did not purchase this car after reading what Edmunds and alike had to say, but luckily did after driving both the E63 and M5. They are definitely fast but so is a ZR1 corvett or a mustang! Point being, Audi owners have more in mind than pure horsepower. It's the ability to have a car that handles under all conditions and environments, and do it in a way that doesn't say look at me. And seriously, the engine is a thing of beauty! The M5 will take me out until it starts to rain..he'll be in the ditch and I'll be eating dinner! I have seriously considered getting an R8 but can't come to grips with giving up such an all around wonderful car. 