I had a 2005 G35c that I traded for my X3 (practicality). It really was a good car, with what I definitely thought were higher quality materials. The seats were the BEST I have EVER sat in for a car... so comfy! Very responsive, sporty car with great speed and braking. I aslo looked at the 350z, but it really was an ugly car on the inside. I had an auto (agreement with the ceo) which was still quick with 280hp and 6.1 secs to 60. The 6MT acually has 298hp (but 10 less torque) and will hit 60mph in under 6 seconds.

I was at the SF auto show this last week and saw an S2000... not my cup of tea. The interior seemed really bland. the interior of the Infiniti is much better. Also, you simply can't beat the styling of the exterior.