Sold my 2003 s2000 last year and don't really miss it to be honest. Awesome drivers car and on a sunny day it was very special driving it flat out but every other single day I didn't enjoy it.
If we got a proper summer then I'd have one again but now on my third Zed and its just feels right to me. Big lazy cruiser when you want it and still a fun sports car when you are in the mood.
To use the vtec in anything above 3rd you were driving at scary speeds which in this day and age is a bit mad.
As said, it's purely down to driver preference but I really don't think you'd be dissapointed in the 350z one bit.