I definitely like the styling of the Z and the sportiness of it. I'm obviously biased but I drove a G before I got my Z and the Z feels more like a race car and the G feels more like a quick luxury car. Depends on what you want.

 

G35 = Practical version of 350Z. More room, smoother ride, but a little bit less sporty.

Both are great cars. Two door G35 looks pretty good IMHO.

 

I love the G35's back seats... to me, that's the only edge it has on the Z, If I had a wife and kids, I would switch the Z for a G.