I'm not even sure I need to keep my entire music library with me at all times. I have songs that get repeated listening and ones which I haven't listened to in years. Same with pictures, asides from a few special pics do you really need 1,000 pictures on your Ipad, which will get looked at, what, once every several months( if that)?
It's nice to have your entire library with you at all times, but realistically, if you're smart about your storage space usage you 'could' conceivably get away with 16gb, unless this is a device that will be more on the road usage then in-home. It truly is about the individual user.
Oh do I hear you.
I have decided I am not going to let my iPad be yet another device I have to feed and nurture and keep filled. I have all my photos on my PC. Most of them also on my laptop. A select few hundred--maybe a thousand didn't count them--on my iPhone and now on my iPad. How many times have I really looked at those photos? Not many.
Almost the same thing with music, though I use my iPhone 4 for music far more than my iPad.
But now that I have started using ZumoCast on my iPhone and iPad it has really changed my view on "having to carry it all with me." Now everything on my main PC is available to me on iPhone/iPad--not just what is in iTunes. It works very good over 3G.... works great over WiFi. If I happen to need a file from my PC it can be download for offline access.
So with ZumoCast I don't see a need to store much on my iPad. But I am in the "mainly use iPad at home" camp and I don't consider it a laptop replacement (though I have made several trips without laptop--I simple remote in to my PC if I need to do something not possible on iPad).
For me 64 GB iPad would be a waste of money.
Michael