I've been buying models from them for 6 years, and have never had any real problems with their customer service. They have some scifi models for sale too that you can use with DAZStudio or Poser.
Well, i have begin use them since the previous century... plenty of package from DAZ and Renderosity... only regret that i have only download package for poser and not DAZ on Renderosity ( missing all the Ds files )...
For newbies, once registered on DAZ, go to http://www.daz3d.com/i/3d-models/free-3d-models?cat=382 for some more free product... plenty of tutorial but some well know model like victoria 4 or Michael 4... around 50 freebies...
You can register on renderosity too and go to http://www.renderosity.com/mod/freestuff/index.php ... over 27000 freebies for Poser, Daz, 3Dmax, Blender, Bryce, Hexagon, etc ...
A other good place with a huge amount of freebies only is http://www.sharecg.com/ ...
Now that you have the software and plenty of freebies content, time to awaken the artist who sleep in you !!!