The LS is a great car, I have very few complaints other that the V6 with auto is a bit underpowered. I just don't feel a real punch from it. Also the steering is a little too overassisted for my tastes, I prefer a little better road feel. Starting the car presents another problem not just with mine either, all LS's almost never start on the first try in a cold start. It takes some cranking. Cornering ablilty is top notch however and everything else about the car is wonderful.
Cornering ablilty, smoothness, 50/50 weight distribution
Shifting out of park jolts the car
Never starts on the first time cold
V6 Auto is underpowered