S2000. I'm not for the 996TT for the same reason that ACZakka just posted. Try looking at the facelifted Miata. I've heard good things about it.
Past: '08 E92 335i|JB|wheels|"eater of HPFPs"
Present:'15 Mustang GT|401A|PP|Recaros|6MT
Sig pic unrelated. I like to go sideways and stuff.