I like upload / download, because it's consistent with so many other tools, though not necessarily radio-related tools. I use FileZilla a lot, so I use upload / download there. Cloud storage systems like iCloud and Google Drive talk about upload and download. People download photos from their phones to their computers. I think people are used to upload meaning "send from here to other place / device" and download meaning "bring to my computer from other place / device". I don't think radios need to be different from those common usage patterns.
Martin.
KD6YAM