12.1 Basic vs Full Package - Pro's and Cons?

Hi,

We have some low bandwidth sites, so considering creating a BASIC package rather than  exporting the FULL package.

Is this just the client install minus the virus defs?

Are the clients still placed in the folder I specify on the export screen?

what other things are stripped out?  Policy config until it checks in?

Any pro's/con's ou guys have seen?  Thank You