I would suggest getting your money back no matter what, rather than taking a trade on an '05. That way, even if you choose a Crossfire, you'll be able to negotiate a great deal on one with all the extras they have on the lots and in the ports. Personally, I think the FX45 is ugly, and that the G35 is awesome but far too common on the streets. If I was in your shoes, I'd consider the 2005 Pontiac GTO. You hardly see them on the streets, they have some cool colors to choose from, and you get the same LS2 motor that the 'Vette has in it with 400hp. All for less than the G35 coupe.