I have the 32gb 3G + wifi. Luckily didn't buy only 16gb cos now left less than 10gb after apps installed. But if your usage basic basic only (games nowadays are like 300mb cos HD version!), then maybe 16gb enough. Someone asked me whether to buy now or later....well my sources said if later maybe 1 year later and not sure about the specs etc etc. So if you want it, buy now to enjoy NOW isn't it? If new version comes out, just trade in, sell etc...just like the iphone