I ordered the 128gb but don't know if I should change it to the 256gb...
Currently have a 11 Pro and use 70/256gb so that's why I went with the base storage. Most of my storage is downloaded music, but could probably clear out most of it since albums on there that I haven't listened to in a long time. Don't take many photos unless I'm traveling, but usually once a month I transfer everything to my Mac and delete it off the phone.
Reasons I am considering 256gb is because people are saying the read/write speeds are much faster (don't know if it makes a difference for normal use), and because if Apple cancels the minis like some reports have been saying, I probably wouldn't upgrade my phone for a few years.