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What's the differences between the latest Norton Anti Virus, Norton Internet Security & Norton 360 Version 3.0? - norton security online version 15.0.0.60 for rogers yahoo! high speed internet

I currently have version 2.0 of Norton 360 subscription (last year) for my phone, which is set to end, end later this month.

I have the box / packaging for Internet security software (Norton 360 version 2.0) I have now.

I wonder if the Symantec Norton Antivirus and Norton Internet Security 2009 is cheaper than individually Norton 360 all in one, what are the differences on each of these 3 products, and if I just purchased Norton AntiVirus or Norton Internet Security 2009 loses some functions of other software products from Norton, is not it?

No Norton Anti-virus, and (2009 Norton Internet Security), more or less the same things or functions?

Is it only support functions (manual backup, or 2 GB of online backup storage), which is different from Norton 360 (different) for the two other Norton products?

I support all my personal documents, files and folders manually on a CD-RW.