What's not to like in the MB E63?

My neighbor has an E55 and we've driven out to Temecula to play golf in it. It's an awesome drivers car. If you want to cruise, it does it. If you want to haul ass, it does it. If you want to go around things, it does it. It's a frigging torque monster compared to my old 540i. And the supercharger sounds wonderful (which you unfortunately won't get on the E63).

But from what I've read, the E63 has all of MB's advancements. 507/465 out of a V8 with more torque spread across the entire power band and a 7 speed transmission to make good use of it? It's all good!

Actually, what's not to like in all 3 cars? They're all awesome. At this price point, you have to factor in the resale value of the Audi. When you buy an Audi, it's never with the intention to keep it very long.