I used to own a S2000 before my first Zed. Loved the car when I first got it, but the handling used to scare me to death. Snappy chassis has been tamed with suspension revisions over the years, but its still a nasty handling car in my opinion.
Tiny cabin (how i ever fit in it, i dont know!) but marginally better build quality than the zed.
Totally different cars, I wouldnt buy another convertible, got sick of the torqueless engine, so the zed made perfect sense to me.
Still loved it as a car, but needed to move on. On balance the zed is a much better owning experience.