I think innitially you would like the Miate better. After driving around wedging yourself into it, not being able to carry anything, i.e. groceries, luggage etc., you would like the z31 better. Not sure how often you would be able to take advantage of the "more spirited" driving available with the Miata. In traffic, for everyday driving, I vote z31. And, it isn't like the z31 is a road block, and it does have t-tops for open air fun.