I bought my 2003 es 300 lexus used with 39k miles on it. I have now had it for a year and I love it. The ride is very quiet, with all of the windows rolled up and sunroof closed driving 70 mph people in the car can whisper to each other and be heard.
Ride, quiet cabin. Style, comfort of the leather seats. Nice sound system.
Transmission and more engine power which they did for newer models.