Hi, I'm looking to get my first ipad, a used one to save a little and then maybe upgrade if the newer ones are much better. I see that I can get used ones for sometimes a few hundred dollars less. I also notice that the price of a 32gb 3g is similar to that of a 64gb wifi. Which is a better buy? I'd like to consider resale value at a later point also. I'd be using the ipad for web browsing, a bunch of PDF files, and probably storing a few movies that would be converted for the ipad. I don't have 3g (I still use t zones for my old iPhone!), but maybe down the road I'll have to consider a data plan. What do you think is better at this point? Thanks in advance!