iTunes backup on mine is only ~10-20GB, iirc. The rest are comiXology, Plex, Amazon Prime and iTunes video downloads.
So in your case, 64GB model is good enough.
To expand on the other answers, your iPad doesn't have to transfer 512GB to sync. Only things that have changed have to be transferred and that will always be much less than the size of your storage. Not only that, it's automatic, and happens without requiring your time or attention.So in your case, 64GB model is good enough.
Nope. That would mean managing content all the time. Not my idea of fun and I'd find it way too inconvenient.So in your case, 64GB model is good enough.
For those who use 512GB iPad and have a lot of data, how do you handle the backup? I guess syncing between iPad and your computer will take very long ass time.
And is there a way you can sync your iPad with your home cloud via Airport?