> > If I can buy an MZ-S for 450, a PZ-1P for 300 and a PZ-1 for 200 which > are typical s/h prices in the UK, what should I go for?
That really *has* to be your decision. We don't know what's important to you. You've read the list of differences between the PZ-1 and the PZ-1p. Apart from that they're the same camera - are those features worth the additional price to you? Choosing between the PZs or the MZ-S is more difficult, because the cameras are very different. That list of differences has been discussed here quite recently - you'll have to look at them, decide which features you care about, and then decide how to spend your money. I like the operational interface of the PZ-1p, the faster flash sync, and the higher frames per second. I like the multi-point AF of the MZ-S, the easy-to-read slanted top, and the battery grip with vertical release.

