While I lust after the *istD I get the feeling it might be just the new toy effect and I'd end up a bit deflated after a few weeks. I absolutely love the feel of my MZ-S, it's the best camera I've ever owned (even better than my first, the Ricoh XR-1) and would be a hard act to follow.
I just wish the MZ-D would come to fruition, even with a smaller than FF sensor (although I love wide angles). I'll probably end up getting a *istD eventually, but I'll miss the MZ-S. Just hold a Pentax - remember that one? It definitely applies to the MZ-S from my point of view. Nick
