For the price you'll pay for the 04 skittle you can get an 02 f-body thats still under the factory warrenty, has 2 doors, and is a hell of a lot faster
PS if you are absolutely dead set on one of the two I'd go with the srt-4....just look at the pro's & con's on the two and you should be pretty well decided. I love the Z's, but it seems to me that they are nothing but a hassle