I had to test drive both of them before I bought one. I was so close on buying the G but I had to test drive the 370z, now I'm here
To me the reason I bought the Z was because the way I drive I felt safer in the Z lol. like I said I think I'm used the to RX7, throw your car where you want to go and it'll take you there. I didn't feel that way with the G, a lot of weight transfer.
I do want 4 seats tho, oh well that's what the GS I'll buy next year will be for.