It really depends on you and what you like, how you feel about them...
I had the same debate too but then i switched my job from driving 3 miles/day (to the train station) to driving 50 miles a day, the thought about losing car values + gas usage from the V8 doesnt sound attractive anymore so i went with the Z and been happy since then (it's been only a month but still)
Not sure if you care about seating, but i came across this problem a few times when i needed to pickup the 3rd person and then i realized that the only spot i have for them would be either hanging on the roof or squeezing in the little "trunk"
