Seeing what everyone else is doing out there to get a good balance between data pushing and battery life.

The "push" settings on GMS push all new and/or unread items correct (new mail, new contacts, new calendar appoitnments) so what is the purpose of the "sync" and should you do it more frequently than once a day?

How often (and where can you change) when GMS checks the main mail server for new stuff?

Thanks in advance!