I love the redesign. I had a 2005 4.4 and there are clear improvements to the 2007/8 model. Performance is improved with the 4.8, but the handling and feel of the road is terrific.
Performance and handling are my two favorites. I also like the amount of options you can get. You'll pay for it, but you can really design this car to include everything you would want from headsup display to navigation to air-conditioned seats.
The throttle is a bit sensitive and the car has a tendency to JUMP off the line. That's fun, but at times can make for a less than smooth start. The idrive is fine, but adding a few buttons (like the Audi MMI) for shortcuts would make a world of difference.