1) About the same.Originally Posted by Thee
3) Both are easy to mod.
4) Both are nice... but I love how the STI comes stock. 350Z looks hot after some mods, stock looks kinda plain... not to mention there are so many Zs out there.
5) Z probably has a more comfortable ride with a nicer interior... depends on how long you are commuting. But then I again I don't mind driving my STI everyday...