You cant compare the two really, in terms of reliability, running costs, insurance the Aston would cost you alot more than the Nissan.
Agreed on looks, performance, style the Aston wins hands down but then again its in different ball park for most of the people who will be putting their name down for a 370z.
+1
A £100k car has £100k car servicing and up keeping costs, even when its £35k...........................
If I bought a 370z I'd expect 3 years of relatively cost free driving and to have anything defective to be sorted by the warranty. An Aston won't be anywhere near as cheap to run............