I'd say that ZG+ is definitely worth it, I've never found another site with so much user contributed content and that's not full of people trying to provide paid for (outside of the website itself) services of one kind or another. There are a plethora of people on
Zoig, I just can't keep up and that's great! I was looking for real people getting their rocks off and
Zoig was the place I found it.
The website itself after the last major update (to my memory) is easy to use has some great functionality and doesn't get in the way of what I want to do,it would be nice to see much more HD content on the site, though I do appreciate that's down to the end user submission quality a lot of the time.