If I was driving them ONE TIME at a track,
Vette, then the Pontiac, then the Cobra if you could rip me out of the Vette.
The Corvette is the total package, great performance, great styling, great price, etc...
The Pontiac is good at alot of things but the interior and ride were dated since the day the first one rolled off the assembly line. The LS1 though...

The mustang, to me, has never been all that special. It takes well to mods, etc... I don't care... the car never got me interested.
My opinion may change with the next Cobra's release, but probably not.