My current site http://trainbaseball.com/joomla needs to become a Paid Membership/Subscription site. I have AEC Content Subscription but it's becoming too much of hassle.

I need...

-Public content displayed to everyone
-Free Subscriber content displayed to users that sign up for free
-Premium Content displayed to those that paid the Fee for a Premium Subscription/Membership

Needs to integrate with PayPal. Extra features would be appreciated. Ease of use is a must. A back-end component like AEC would be nice, just easier to use or understand. 

A big issue: My current content is being display through YooTheme's Zoo Component. It's a catalog component and I will be sticking with it. I need users to be able to see links to, or intro-text for the items, just not the entire thing.

Any ideas are welcome!