Supporter plugin with Multisite Plugin Manager

If I want to make few plugins available for all and few for only Supporters then which plugin setting to use?Into the preium plugins tab in the supporter plugin or this one?How does it differ from Supporter plugin actually if I want to charge users?

My second question is:will I be able to let my users use any standard(found in WP plugin repository) 3.1 supported plugin in their site or like old WPMU days it has to have some WPMS support?
Kindly help me,it's something I'm confusing(new to WPMS)
thanks