In my opinion, looks wise, 97-03 Coupe, because the 04+ are ugly as hell, the GXP looks decent with the big wheels and such, but unless you like the 97-03 with the plastic valve covers, plastic intake manifolds, and plastic gaskets, and transmissions that are made of rubberbands, the 04+ seem more durable.
But like others have said, depends on the situation...reliability, aftermarket availibility, etc.