I've been hearing/reading alot about the issue of delay when you lay on the throttle w/previous models. I did notice the delay somewhat with my 2004, especially on exiting turns. I could somewhat defeat the delay by turning the traction control off, but when you get on it, the delay was still there. I am happy to say that the 2007 feels much more responsive. I don't know if that has anything to do with changes made in the engine compartment with respect to airflow, or not. But the car definitely is smoother in transitions and does respond more quickly to throttle input

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As far as aesthetics go, the 2007 has HIDs

, a reworked grill and airdam, the taillights are LEDs, turn signal is clear with amber bulbs, the backup light is now located on the bumper instead of being in the taillight assembly. I now have bluetooth built in so I don't have to hold a phone in my ear

the stereo sounds different, can't quite figure out what they did. The "wood" is lighter colored and more brown, as opposed to reddish/brown.
I'm happy with the changes, although I would have hoped Toyota would put the 3.5l engine into the Solara, too.