I have owned BMW M5, Porsche 911 Turbo and I thought they were great. I love the way my new E55 drives, I love how fast it is and how well it handles. I think the 911 Turbo I had was one of the best handling car, but this E55 it's up there and it has room for 5. . It is a shame when you have some one pull up to you in a new Corvette and you leave them behind.
The sound of the engine, the design and the looks I get from others.
Better Navigation system. My wife drives an 2005 Acura MDX with Navigation and its got to be the best I've seen do far. But I love my E55