How many GB do I need on my new iPad?

I think that once you get your iPad you may wish for more rather than less room on it...I would advise the 32GB model. I now use my iPhone way less since getting the iPad last fall - music, photos, etc now happily on iPad - funny how it's back being a phone (& text device).

If you are not planning on having films/tv shows or much music on it then the 16 gig version would probably be enough - they are what tend to take up most space, and sometimes photos. Remember though that some of the storage is taken up by iOS and the built-in apps, so you will have less than the 16 or 32 gig to play with, and the capacity can't be increased once you've bought it (though you can swap content on and off). So you possibly also need to consider whether your use of it might change over time (e.g. storing a number of videos on if travelling somewhere).