Experience with my GS...
Car is very smooth and quiet otherwise. Feels faster than the E350. Overall pkg looks nice, but I think id prefer the E-class over this car. Wish I could say the car is better but its not. Also the HK in the E sounds nicer than the Lexus system (didn't get Mark levinson).
My neighbor also demonstrated the electric trunk closing feature. It took forever for it to close. The next time I went to a Mercedes dealer, I checked out that feature on a new S550. The W221 worked much more quickly and smoothly (of course it's also more expensive).
Another problem I have with the IS350 and GS350 is that I have difficulty seeing out of them. The IS350 was especially bad.
Of course beauty is in the eye of the beholder but I characterize the IS350 and GS350 styles as Neo-Japanese. Not my cup of tea.
Now if anyone wants to take a shot at my new '08 E350, they are certainly entitled.






