I absolutely love my IS 350. I looked at many cars in this class (BMW 335i, A4, Acura TL, Mercedes C class, etc.). I really didn't even want to look at the Lexus because everyone seems to be driving Lexuses these days and I wanted something different. However, once I saw the IS I changed my mind. We have had no problems and driving is very fun. The car is fast, but not as much road noise as other cars had. I had to get the luxury package to get the memory position seats and love having the heated and ventilated front seats. The interior is loaded and very comfortable.
Mark Levinson audio system is superb; love the keyless entry-this is so convenient; comfort of seats; speed of car.
Make the memory seats available as a standard feature; make the navigation system more user friendly,