What should I buy?

I am buying a new mustang within a month, but I don't know what to buy. I've narrowed my choices to either a 2001 Cobra or Saleen s281SC. This will be my daily driver. I can afford either but the payments for the Cobra look alot better My fear is that I will spend alot more upgrading a Cobra and lose my warranty in the process. I'm not into ground effects and decorations I just want serious power and good handling, with dependability, of course. Any help would be greatly appreciated.