perfromance wise they are absolutly identical... if you live in high altitude about sealevel the TT-S drives circles around the 370Z ... turbo vs n/a at high altitude is always a easy win for the turbo powered car..

straightline the TT-S is little bit faster with a slightly better 1/4mile time at a higher trap speed... at the track the 370Z is a little bit faster but needs a much more skilled hand.. and you have to be carefull about oil/water temperature and brakes

one thing to think about..the 370Z has dangerous brakes.. they work very well till they completely fail... C&D crashed a Nismo 370Z during their lightning lap at Vrginia International raceway at 130mph because the brakes failed completely from one turn to the next.. the laptime on this bumpy up and down track was much worse than that of the TT-S which C&D claimed to be one of the easyest cars ever to drive very fast.

in the Z, with no warning, the brakes went from fully effective to missing in action in a single, disastrous stop from 130 mph. The pedal collapsed to the floor, and what remained of the braking power was only able to slow the car at a rate very much like stopping on snow. Fortunately, no one was injured when the brakeless missile introduced itself to a retaining wall

I like both cars if you don´t race them regualry it is only a question of personal taste... the TT-S is easyer and cheaper to mod thanks to the turbo engine, the 370Z is meaner looking with no hairdresser image...

well i prefer the 370z ,i think the tt might have better interior and finishing but the 370 is rear wheel drive and has better driving experience.as far as i know,tts do make the driver very assured abt his driving but that lessens the driving pleasure.i also prefer 370 sound and looks:-)

370Z is more of a mans car in the UK.

Well same thing goes for me... can't really decide which one is better... :shock:

Thats a tuff comparison. Ya got me on this one, i cant decide.

TT-S for me. I guess I am a brand victim. :D

If you really looking for performance get a 2009 NISMO 370Z and wait for the upcoming performance packages.
notice that even the standard 2009 NISMO 370Z is quicker than the tt-s in dry conditions also less expensive.

What matters to me is actually the performance and the looks. I don't know which has better performance and which is better known by people. Rear seats? Well I don't really need them. I think TTS's rear seats are too cramped and it is impossible for a regular sized adult to sit on it.

Do you need rear seats? If not I'd go for the 370Z if you are after the best driving experience.... however the TTS is hard to beat these days if things like interior finish and brand image are important to you.