90 LIMITED,
My suggestion would be the SRT6. I have owned my share of mustangs and and other fast cars. I simply love my SRT6, the handling is awesome and the fit and quality are exceptional. I purchased my car because my wife gave me a piece of advise she said for me to purchase a car that would make me happy, and not spend more money on mods and more mods. I too looked at a vette and several mustangs including another Saleen and a Shelby. Honestly for the price no other car compares these cars. These cars are a great value and since you are purchasing this car used you are getting a deal since the previous owner absorbed the depreciation of the car. On the down side the aftermarket is more limited than your other two choices and more costly. Good luck on your future choice.