I think after all the cars you have owned you will need something as powerful as the EVO and S4. It is not going to be as fun and fill the void if you don't. What about the C5 Z06 or even the C6 Z06? They can be had for some good deals right now. You could even go with the C6 Grandsport? 03-04 Mustang Cobra, 996 Turbo, CTS-V, 135i or 335, E46 M3, E9x M3?
Just some options, but I have a feeling it better be quick stock or you will get tired of it quick