Go for the models with a manual focus ring as auto focus can let you down if you are shooting through glass, iron bars, wire fencing etc or if there is a crowd of people in front of you, it is certainly worth the extra expense. A manual zoom lever however small would be perfect or even a redesigned electronic slider (most of the ones on cameras now, including Panasonics are crap) as it is almost impossible to do a reveal shot smoothly. As far as low light is concerned, don't be swayed by some sales person telling you the camera will allow you to film in total darkness, yes, if you want utterly useless images, you need a few thousand lux to get good images.

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Better than a poke in the eye with a pointy stick any day...