I would make a couple of changes to your list.

The Panasonic LZ2 has been replaced by the LZ5

The Canon A700 also fits into your group of cameras.

Here is a side-by-side look at the specifications:

http://www.dpreview.com/reviews/compare_post.asp?method=sidebyside&cameras=canon_a700%2Cnikon_cps4%2Cpanasonic_dmclz2%2Cpanasonic_dmclz5%2Cpanasonic_dmctz1&show=all

For any long lens camera, image stabilzation is a big plus. All of the Panasonic cameras have it.

The Canon A700 is the only one with manual controls (aperture priority and shutter priority).

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