Having a sister who's interested in a new Mustang, I've visited the Ford dealers and seen them up close numerous
times. I have to say, the new Mustang is the first Mustang I'd consider buying in a long time.
That being said, I'd first look at used C5's or a C6 (if I could find one), or as Tag said, the Saturn Sky might be a possibility. Ideally, I wait it out and look for someone to sell their 'Intimidator SS'.
(I LOVE those