You mean 135i?
I might go for a Subaru STI. Just because I feel like being modest.
If I wanted something a little more crazy, I'd get the 911 Carrera S, facelifted version. What's the numbering for that then? Still 997? 997.5?
But if I were to go batshit crazy, I'd go for the Murcielago LP640. Or the Gallardo LP540.
Actually, I'm surprised no one mentione the Estoque, although it might be because it's still a concept, but it shouldn't look drastically different when it's in production.