I don't buy this " its never the same" argument. If the car drives good and qualified people say the repairs are good, there is no reason to believe the car is any different than it was pre-accident. You said there was no frame damage which is the biggest determining factor in whether or not a car drives like its supposed to. Of course if the psychological aspect is bothering you, turn it in. But I doubt there is any difference at all in the way this car drives compared to any other one...
2013 Lexus GS 350 F-Sport Starfire Pearl/Flaxen w/nav
2009 Hyundai Genesis 3.8 sedan Sapphire/Tan w/nav
1997 Ford Expedition Eddie Bauer