It all really depends on why you are buying the car. Are you getting it to autocross? Are you getting it for "spirited driving around town" (especially on ramps

)? Are aesthetics equally important as (if not more than) performance? Do you want to go faster than 25 mph on the highway?
With all of that taken into consideration I'll take the Camaro Z28 over the Mustang or the bloated-looking Mopar offerings. I'll likely never own one, but that is not part of this conversation.
And Ford REALLY, REALLY needs to do something about that speed limiter.