64GB is enough for me — barely. For that reason, I'm glads I went with 128GB. I store my music on my iPhone, not my iPad, however and 64G is way too small for me. 128 was not an option on my XS so I went with 256GB and am happy with my decision. The point is that I am not anyone else here and vise versa. There is only one correct answer: It depends on your needs. If there's any doubt, go up a size for the future.