Lets make an important distinction here: a great skin texture has two components.

1. The texture set itself.

For V3, I swear by Jokasta and Kimshara, both available here at Renderosity.

2. The Shader Settings.

To date, figures have been designed for Poser. DAZ Studio has better lighting and surface control, and all figures require tweaking to render to best advantage in DS. People are just beginning to swap shader presets, I'm hoping this will become more and more common. (You don't swap copyright texture maps, just the shader settings to display them to best advantage.)

I'm hoping swapping shaders for existing figures and scenes become more common as more folk convert to DS, and if, frr instance Renderosity creates a DS freebies area. (hint. :)).

For starters, check out Questor's site at

http://questor.oldwolves.co.uk

and his extremely helpful postings on the DAZ forums.

And if people know more DS shader sites, please share!