I'd personally go with an 05 GTP, the only thing you have to watch for with the 05's is the lower intake manifold gaskets. Some got the new aluminum ones, others didn't. My 05 had the plastic/nylon gaskets and I had to change them out.

And I'd personally stay away from the non-supercharged if acceleration matters to you at all. I've got a GT and even with a few mods, it's slow. The GTP's are a little quick stock, but can be made faster for way less money than the naturally aspirated models.