Purchased car in September 2007. Test drove BMW 750i and decided to buy LS 460 due to reliability track record. The car is a great improvement over LS 430 in most categories. The interior design is more sporty and not just for older crowd. Exterior design is sporty but blends in with smaller Lexus sedans too easily. The seats are not very supportive in hard turns but comfortable. Rear seats with power recline and ventilation are very comfortable. The suspension is far better then previous LS 430. One major flaw is wind noise from both front windows. Just like every one else waiting for dealer to get parts as per Lexus bulletin. I seriously hope that this will fix the noise issue.
Engine performance, transmission, interior design and foremost fuel economy for such a large car.
Make exterior design more distinctive from other Lexuses. You can never confuse an "S" series to "C" series. Use a single button to select major control with touch screen to make adjustments (reduce clutter on dash). Softer head rest and more supportive front seats.