I consider to buy a iPad retina with 16 Gb.
Is this amount of memory a problem and should I buy the 32 version?
When would I need more then 16 Gb memory in the iPad?
It depends on how much music, movies, books and apps you want on your iPad and when some games are 1gb alone the space soon goes. Also bear in mind that the 16gb is really 14gb and the 32 is 28gb. I went for the 32gb its worth it in my opinion.