Registration form with subscriptions through paypal

Hey guys,

I have a subscription based website that sells data for 6 specific products. I need a registration form that I can do the following:

Dropdown menus:
Product 1
subscription level 1
subscription level 2
subscription level 3
subscription level 4
Product 2
subscription level 1
subscription level 2
subscription level 3
subscription level 4
Product 3
subscription level 1
subscription level 2
subscription level 3
subscription level 4
Product 4
subscription level 1
subscription level 2
subscription level 3
subscription level 4
Product 5
subscription level 1
subscription level 2
subscription level 3
subscription level 4
Product 6
subscription level 1
subscription level 2
subscription level 3
subscription level 4

I do not want subscribers for product 1 to be able to see product 2 and so on...

I have played around with s2member, restrict content pro and wp-member but I need something that has 4 subscription levels for 6 different products.

Please let me know if this is possible and point me in the right direction on where to begin.

Thanks