- All of the models got color screens regardless of Tech or not.
- The cassette player is gone. Radio face plate has changed
- The seat adjustment buttons relocated to the side of the seat. It's not visible directly anymore
- The front rotors and calipers have changed. New rotors are thicker, calipers have a different pad type and are beefier
- 18" wheel design is different. 45s with sport got a different 20" wheels design
- The grille have changed. There's one more bar in the grille in 06-08 models
- After 07, they started to offer iPod gateway as option
- The suspension is (supposedly) more comfortable with each model (not solid, user opinions)
That's about what I can come up right now..