This car has exceeded every expectation I had for it. It is fun to drive but also very luxurious and comfortable. Several times on the road, I have surprised other cars with the speed and acceleration of the GS.
Acceleration, speed, handling and overall comfort. It's not as smooth as the ride in the LS or even the Toyota Avalon, but much more fun to drive.
The telescoping steering wheel could come out more for those of us with longer legs who put the seat back all the way. A little more room in the back seats for adults would be nice. And a built-in inverter for AC power would be helpful sometimes.