I’d planned to get 64GB as I find it easy to delete audiobooks, photos etc and just keep them on my iMac. Then I realised I’m hoping to keep the phone for at least 4-5 years and although 64GB would be perfect for a couple of years, I wasn’t sure long term so in the end went for 256GB. I don’t wish to use any form of online storage, so this isn’t an option.