I have an '06 E55. Bought it new. Nothing but routine maintenance.
It's easy and pretty cheap to go well north of 500HP. Even with the stock 469 HP if you take off traction control and hit the gas you will not move. You will just roast the tires. The supercharger gives that car amazing torque.
The interior is amazingly comfortable. It has three suspension modes and three transmission shifting modes. Very comfortable for long trips.
You need to go to MBWorld.com and visit the E55 forum. Lots of great info.
You'll love the E55. It's a beast. And yes, it's faster that the M5.
